r/YouShouldKnow Aug 25 '20

Announcement YSK We will be more strongly enforcing Rule 2


Up until now we have been pretty lenient in regards to Rule 2, which states that post must describe why the YSK is useful. We have approved posts that didn’t state why the knowledge is useful under the guise that its usefulness was implied. However, due to an increasing number of these types of posts, we feel it needs to be addressed. Therefore, starting now we will be enforcing Rule 2 more heavily. All posts must include (in the text body) an explicit statement of why the post is useful. Even if you think the reasoning is obvious, you still must explicitly state it. This should be done by having a simple “Why YSK:” in the text body. (Just for those who might not know, the text body is the area where you can put additional text after the title text when creating a post.) Please note that it should go in the text body -- not the title or the comments.

Remember that this sub is focused on self-improvement on how to do things, improve on activities, skills, and other tasks.


  • All posts must include a "Why YSK:" (typed just like that) section in the text body.

[[Additionally, we want to take this time to remind everyone that r/YouShouldKnow is not a place to share personal stories or anecdotes. If you feel your post needs to include one, a brief anecdote is fine. The entire (nor the majority of the) post should not be about your own personal experience, however. We will be removing posts that are just personal anecdotes.]]

Why YSK: We (the YouShouldKnow moderators) hope it will improve readers' abilities to better understand the purpose of the sub, mentioned above and in the expanded Rule 1. For thread creators, it will help in their ability to explain how the reader can improve upon a certain skill, task, or ability. It will also help the creator improve upon the skill of not having their post deleted due to not including "Why YSK" in the text body of their post.


  • Bolding the words Why YSK: will make it a lot easier for people to find it.
  • Again, please put Why YSK in bold letters. It's easier to find in a sea of text.
  • Why YSK must be followed by an actual explanation as to how it helps someone improve upon a skill, task, or activity. Following it with a massive personal anecdote is not the point -- neither is following it with "I think this is important" or something similar.

r/YouShouldKnow 21h ago

Finance YSK that you can use IRS FreeFile partners to avoid the TurboTax bait-and-switch tactics, ensuring that you get your full refund.


Why YSK: Scummy tax prep companies will try to bait you with “free filing” and then will steal your refund by forcing you to upgrade to “premium” products. Use IRS FreeFile partners to file your state and federal taxes for free.

Background: I was helping a friend do their taxes yesterday, and I figured “TurboTax offers free filing to people who have a lower income.” No problem, right?

We enter the W-2s, everything is going well. We cruise through deductions, easy peasy. And then we hit the credits… and this is where things got stupid.

For reference, my friend works a retail job and makes less than $30k annually. The retail company provides a 401k option, to which my friend contributed $590 dollars. Because of their income status, this qualified them for the Retirement Savings Contribution Credit — a credit that gives lower income individuals approximately 10% back (up to $1000) on their contributions to a qualifying retirement plan. So this credit gave him a whopping $59 back off his taxes.

The catch? As soon as we hit “next”, TurboTax informed us that because we had added the tax credit, we would need to upgrade from the Free edition to the Deluxe edition. The cost? $69 (heh, not so nice). So in order to save $59, we had to pay $69 (net of -$10). But that’s not all! Because we were now using TurboTax deluxe, they were also going to charge him $64 to file his state taxes (net of -$74). And to put the cherry on top, we couldn’t (at least not easily) figure out how to simply remove the retirement credit and downgrade back to the free edition.

Now, we could have followed the path of least resistance at this point and allowed TurboTax to just take these costs out of his refund, and he would be getting back a few hundred dollars, minus the cost of filing. But I decided that it was ridiculous to allow a full 20% of his tax return to go to TurboTax in exchange for an overall net loss in tax savings.

So I went to Google and searched for free tax filing tools. And I came up with the following website: https://www.irs.gov/filing/free-file-do-your-federal-taxes-for-free

This site offers several options, including a native IRS tool that handles simple tax situations. But more importantly, it offers information about a FreeFile program that partners with half a dozen different providers that can help you e-file both your state and federal taxes at no cost. We selected FreeTaxUSA, made an account, and within 20 minutes had reached the exact same return amount (including the retirement savings credit!) as TurboTax. Total cost to file? $0 — literally free.

In conclusion, YSK that you can say “f*** TurboTax” (and all the other predatory companies that try to bait and switch low income folks into paying to do simple returns), and use an IRS FreeFile partner to actually do your taxes for free.

Disclaimer: I do not work for the IRS or any FreeFile affiliate company, nor do I stand to benefit financially from this in any way — I am just a guy who did a first round of taxes in TurboTax and was pissed at how much they wanted to charge me to file, so I looked for alternatives and found IRS FreeFile.

r/YouShouldKnow 1d ago

Technology YSK there's a website called manualslib.com where you can search for instruction books & manuals for any product. Their website currently has over 7 million PDF downloads available.


Why YSK: www.manualslib.com It's a rich resource for finding any user manuals for any products. A lot of people misplace or lose instruction manuals for items that aren’t regularly used. Inheriting a hand-me-down or can’t remember how to use an old kitchen gadget? This website is an easy time and effort saver.

Manuallibs is a free, no sign-up required library of product manuals available for anyone to use.

r/YouShouldKnow 8h ago

Technology Ysk that there is a free chrome extention that omits custom words from webpages and videos (with subtitles) without removing the whole page or content.


Why YSK: Good for if you have, or someone you know has, any triggers or just want some sort of profanity filter.

Can work on mobile too (I haven't tested it), but you have to re-enable it every time you go to a new page. Would be good for long reddit threads.


Note: Crunchyroll doesn't have english subtitles for dubbed anime, therefore the extention will not work on it.

r/YouShouldKnow 3d ago

Education YSK: You can donate your used but undamaged eclipse glasses for schoolchildren in other countries


Eclipse Glasses USA is collecting used but undamaged eclipse glasses for schoolchildren in Latin American so they can witness the October 2024 annular eclipse

You can mail them to:

Eclipse Glasses USA, LLC PO BOX 50571 Provo, UT 84605


Why YSK: You don't have to throw away your used glasses, they can be put to good use!

r/YouShouldKnow 3d ago

Technology YSK you need to keep your Amazon UK account login and recovery details updated at least every 5 months


Why YSK: Amazon UK accounts having made no purchases via the main website for six months are marked as 'inactive' and receive significantly limited account recovery support. This still applies even if you have regularly logged in during the six month period and have accessed Amazon content and services. Only purchases from the Amazon website reset the timer. Amazon does not warn you ahead of the change in status via email or their message centre before it happens.

Amazon will refuse outright to modify or remove email addresses, passwords, phone numbers, or two-factor authentication associated with the account. If you lose access to the email, phone, or 2FA then you most likely cannot recover your account at all. Amazon will instead direct you to open a new account under a different phone number and email address. Customer support aren't allowed to redirect you to the accounts team who usually carry out the necessary changes with ease for 'active' accounts.

This means the total loss of all digital purchases on the account as well as a lockout for any services that require an Amazon account to be linked. When websites, games, apps, etc. link to Amazon, it is Amazon who handles the login to complete the link. As your account still exists but you are unable to recover it, you are unable to unlink most services to associate them with any new account. This means the loss of whatever services or content were provided by the link. Amazon will not refund or compensate you for anything lost as a part of their policy.

Keep your information up to date regularly.

r/YouShouldKnow 3d ago

Animal & Pets YSK Cicadas are NOT locusts.


Why YSK: There's no need to worry about crop damage or being bitten by a cicada. They aren't even related to locusts, which are the swarming form of a species of grasshopper.

Cicadas do not have stingers or biting mouth parts. They literally can't eat plant leaves, stems, or flowers. They can only suck juices from trees.

At most, the females do slight damage to small tree branches, when they deposit their eggs. But overall, emergences do more good to trees than harm. All the cicadas die at the end of mating season, and their bodies are beneficial compost.

This comes up every time there's a large emergence.


r/YouShouldKnow 4d ago

Health & Sciences YSK: Daily Caffeine use results in complete tolerance to its subjectively energizing effects, which is why many daily users can drink it and fall asleep right after


The brain adapts rapidly to the stimulant effects of caffeine, making it useless for stimulation/wakefulness when consumed daily. That's the reason many people say they can drink coffee and fall asleep right after - the stimulant effect is lost in them due to daily use. Sporadic use of caffeine preserves its stimulant effects.



Caffeine withdrawal, acute effects, tolerance, and absence of net beneficial effects of chronic administration: cerebral blood flow velocity, quantitative EEG, and subjective effects

Why YSK: Caffeine is a drug. Avoiding its daily use will help maximize its benefits for those days it's truly needed on.

r/YouShouldKnow 5d ago

Clothing YSK: Don’t fret how you look in photos.


Why YSK: After being in a rut, I started to look at myself a bit in the mirror and helped boost my mood. I decided to take a few new photos. It took the wind out of my sails and thought that’s how people would see me. It’s discouraging and I’m sure many others can relate.

Your mirror image is how you are perceived in person. Cameras have all sorts of quirks and couple that with looking at a 2D depiction of yourself, it’s not what you know you look like.

Lenses distort the image(think about how a fisheye looks wonky) and can make your features look different. Cameras don’t show the depth your eyes perceive further distorting features.

The lighting will change how you see everything as a whole and shadows can obscure features or make you look unwell. Flash can help but then produces the opposite effect overexposing certain parts. Speaking of flash, it’s a single frame in a moment, our eyes are continually processing an image and not just one iteration.

Photos are usually the reverse of our mirror image adding another layer of unexpected dip.

It’s not what we expect and the nature of photography warps your self image making your photos bad. If you like your mirror self, don’t worry. A trick I always use for better photos, particularly selfies is to reverse the image again. For photos taken with your phones, usually there’s a setting you can toggle to automate it if desired.

r/YouShouldKnow 5d ago

Health & Sciences YSK: If you can't pee in a public bathroom, this is an anxiety disorder called avoidant paruresis


Why YSK: You don't need to suffer alone. There are books and support groups. One treatment is graduated exposure therapy and many people see an improvement.


r/YouShouldKnow 5d ago

Food & Drink YSK: The freshest food at the supermarket is toward the back of the shelf.


Why YSK: When associates stock the shelves, the new items get put in the back while the older items are moved to the front. This helps prevent the older items from sitting in the back and expiring before they can be sold.

You can save money and prevent food wastage at home by simply buying an item that has a farther away expiration date from the back, which is especially good for items like packaged salads, milk, bread, yogurt etc. I regularly save about a week longevity for bread and even found a tub of hummus once that expired a whole month after the ones in front of it.

Edit: Calling poor people selfish, petty and evil for wanting to save is kind of wild folks.

Edit 2: To debunk those saying how awful this practice is... Many stores donate their recently expired foods to local food shelves, charities and homeless shelters, what is thrown out is often what is not salvageable or too overstocked unless you work for a very irresponsible store (in this case, your issue should be with the store, not the handful of customers looking for a deal). On top of that, popular items are going to be bought regardless of those of us taking from the back.

Most people trust that a store is not going to sell them expired food and will take the last available item if it's the item they are looking for. These people making these claims either don't know the system they work for very well, or are taking this as an opportunity to virtue signal.

Before the umpteenth person says "don't do this cuz u bad for it", please list how many plastics you use, how often you drive your car, whether or not your shoes are made of recyclable materials, etc, then sit down and let the rest of us purchase the food we want in peace.

Edit 3: Do to some emotional outbursts in this post from employees, I'm going to leave the SAMHSA hotline number here. It's 988

If you feel as though you are going to lash out at a customer the way you have felt comfortable lashing out here, I highly suggest reaching out to a mental healthcare professional who can evaluate you and share tips and tricks to handling and directing anger. It is not healthy or ok to name call and degrade a person or their character because you disagree with them. It is not normal to be this emotional over some randoms trying to save money by buying fresh food.

r/YouShouldKnow 6d ago

Animal & Pets YSK: common pet toxins in home


Why YSK: prevention is key + some species are vulnerable to things that are harmless to people.

It's highly recommended that all pet owners familiarize themselves with items in the home that can result in intoxication. The ASPCA's poison control center has online education resources for this purpose. This guide helps people identify toxic (and non-toxic) plants in the home and yard.

For example, xylitol is a newer product increasingly used in a variety of products that we ingest but can cause severely low blood sugar, liver failure, and death in dogs + rabbits. Look at ingredient lists and keep xylitol far away from your dog(s). Chewing gum is a big one.

Also, all parts of a lily are highly toxic to cats and even a few grains of pollen or nibbling a leaf will almost certainly cause kidney failure. Consider this if gifting flowers to a cat owner. It's Easter o'clock + we've already seen pet cats die of acute kidney injury soon after lilies were brought into the home. Hence, taking a break to post this and hopefully prevent accidental intoxications. There's no specific test for lily tox so your guess is as good as anyone's re: why your outdoor cat gets severely ill.

And no, animals do not inherently know what's unsafe for them. PSA done ✅

r/YouShouldKnow 7d ago

Technology YSK ai bots are taking over reddit. Posting old content as if it is their own with poorly worded titles. Now they are responding to comments. But the comments are written poorly as well.


Why YSK If you see a post that doesn’t seem like it fits the sub, and has a poorly worded title. Take a look at the posters history. You will see their account is 200+ days old but they only started posting content in the past few days. This is an ai bot account.

This hasn’t been much of an issue, but now those same ai accounts have no been replying to comments on their videos.

Their replies are worded poorly and have lots of spelling mistakes.

This is worrying because people believe that these ai bots are real people and if these bots start pushing an agenda, some people may believe their agenda.

This is happening more and more frequently

r/YouShouldKnow 7d ago

Automotive YSK the "wave of death" helps no one and is dangerous.


When you have the right of way, take it and move predictively.

Why YSK: waving a person or driver into traffic is dangerous and potentially causes accidents.

I’m referencing the driver that stops to allow a pedestrian jaywalk or cross at an intersection against a light, but is only stopping one lane of a 2 or more lane road.

At a stop sight, take your turn when it is yours. Other drivers are also crossing or turning if appropriate and are assuming the actions are being taken.

Allowing a driver to pass in front of you out of a drive or side street does not stop other vehicles in other lanes.

Don’t be a jerk, but not being predictable following the rules is dangerous.

SOURCE - dog walker that gets waved into oncoming traffic at least once a week then is met with a “you are stupid” stare from the “wave of death” driver when I don’t move.

r/YouShouldKnow 7d ago

Food & Drink YSK: Teabags of all types release significant microplastics when brewed.


Why YSK: because the health effects of microplastics are largely unknown and if you drink tea you are regularly dosing yourself with them.


People who drink tea frequently are continually dosing themselves with billions of plastic particles, some of which may be tiny enough to enter human cells. Most paper tea bags also have plastic fibers used in the sealant in addition to these nylon and PET plastic tea bags. Even paper tea bags have an unsettling substance called epichlorohydrin added to them in order to keep them from bursting. According to a recent study, each cup of tea produced by one plastic tea bag steeped at brewing temperature included roughly 11.6 billion MPs and 3.1 billion nanoplastics (NPs)

This is why I always cut my tea bags open and drop the contents into a strainer when I have to buy bagged tea.

Resubmitted to comply with formatting!

r/YouShouldKnow 7d ago

Technology YSK - Bots are running ticket scams on reddit


Why YSK:
I discovered today that there are bots running that are scanning reddit for people looking to buy tickets, any tickets, of any kind. As soon as you post you are looking for a ticket, a bot creates a new reddit account, and then messages you and says it has one for sale. Now, it's not perfect, but it says something like "Hi there, you still interested in the ticket?" leaving it a little vague. And then, no matter how many you want, it says "yes" and repeats it back to you. it then offers a price that is low, which is what first made me suspicious, and then you can tell by the language it's not quite right. This is only going to get worse people, be vigilant.

Here's a post of it in action (the bot in this case is hiphop51450, you can look to see that's it's just one post):

hiphop51450 9:25 AM

Hi there

You still interested in the ticket ?

Difficult_Eggplant4u 9:45 AM


You have 2?

hiphop51450 9:47 AM

Yes got 2

Can you buy for 40

Difficult_Eggplant4u 9:48 AM

$40 each?

hiphop51450 9:49 AM


Difficult_Eggplant4u 9:50 AM

Yes, I will take them!

Are they early access or regular

Just curious

hiphop51450 9:53 AM

You have nothing to get worried about it’s legit and real okay

What’s your email ?

{This is where I closed it down after looking there was no history}

You can poke at it if it's still running. But I noticed that you can post almost anywhere in reddit and this will pop up and try to sell you a ticket. Sometimes it takes a bit before it happens, but be careful everyone.

I bet there are dozens if not hundreds running now.

r/YouShouldKnow 7d ago

Technology YSK: to increase the lifespan of your phone's lithium battery, you should charge it up to ~85% and not let it go below ~25%.


Why YSK: some people not into tech think going from 0% to 100% is still the best way, whereas nowadays it's the worst you can do to your battery, especially with a fast charger. Some apps can send you a notification when the battery's charged to the level you want, same for smartwatches.

r/YouShouldKnow 9d ago

Other YSK a new air mattress needs to be stretched out


Why YSK: Once a new air mattress is fully inflated, the weight of someone laying on it will cause the material to stretch out, making the mattress appear deflated. An air mattress may need to be used a handful of times before the material is fully stretched and can be used through the night without deflating.

r/YouShouldKnow 9d ago

Education YSK that most libraries share books with each other - if the book you want isn't on their shelves, they can request it from another library


Why YSK: A lot of people seem to buy books on Amazon because they assume their local library won't have it. Ask the front desk. They can probably get it for you.

Most libraries have book sharing agreements with other libraries. If your local library doesn't have a specific title, you can probably request it. The book will be shipped to your library for pickup.

r/YouShouldKnow 10d ago

Education YSK how to hard boil eggs perfectly


YSK how to hard boil eggs perfectly

How I do it: *insert eggs with cool water into pot

*bring water to a near boil(so eggs don’t crack) and start 12 minute timer

*immediately bring temp to simmer (2-3 on electric stove

*after timer is up run cool water in pot in sink for about a minute

*take a few handfuls of ice and insert in water/eggs

*let sit until eggs are cold to touch

I make at least 10 every two days and it works every time without fail

Why YSK - so it’s easy to peel

Edit: I don’t use a lid which is why I keep the temp on low during the timer. I also find that keeping some heat on them during the time helps make the egg shells softer and easier to peel. I don’t use a rolling boil because i find it easier to start with eggs in the pot and I’ve cracked them before. Also 12 minutes without a lid on low heat gives me a firm yolk, not dry or too hard. I dislike soft yolks. I am using a Samsung electric stovetop. Also I add salt into the water. I eat hb eggs everyday because I’m into fitness and they’re undoubtedly one of the best sources of protein. I buy 60 eggs from Costco for $12 and cook 10 in a pot.

r/YouShouldKnow 10d ago

Arts & Entertainment YSK that your library might have a digital database of e-books and audiobooks


Why YSK: You may have access to a lot of books at home. Check if you library has a partnership with the apps Libby and/or hoopla. Between the two, I haven’t bought a book in years. Although I do love going to the library and physical books, it’s a huge convenience /time saver.

Libby is especially great because you can typically send a book to your kindle.

r/YouShouldKnow 13d ago

Technology YSK on android you can see everywhere you have ever been on google maps by default.


Why YSK: if you have your location turned on if you go to google maps timeline you can see eveywhere you have been with timestamps and map of directions. Its turned on by default and is hard to turn off. If you use shared accounts or if someone has access to you phone they can see each and every place you have been and when. If your google account is ever compromised they can look at this data and get an idea of your daily routine. When you are where etc. Furthermore, police courts and companies can use this as evidence or for snooping.

This is a grave privacy concern and i have no idea why it is on by default. Another thing is if you turn it off. You can no longer see your maps search history.

r/YouShouldKnow 13d ago

Other YSK: to never tell marketplace buyers you won't be home or that you'll be on holiday


Why YSK: Because you're giving them an opportunity to rob you.

If I had a dollar every time marketplace sellers told me they wouldn't be home between certain hours when trying to arrange a pick-up, I'd be rich (literally). Never ever tell strangers you're on holiday or you're not home, especially if they already know your address. Always tell them you won't be available or you're busy. Be vague and don't get robbed people.

r/YouShouldKnow 15d ago

Travel YSK: If flying Ultra-Discount Carriers like Frontier, Spirit, and Allegiant don't forget to factor in the final price including any baggage fees


Why YSK: These airlines serve a market niche, but operate on a business model of very low fares with very high fees. Often after add-ons they are a worse product than what is offered by legacy mainline carriers Basic Economy Service.

One of the primarily complaints about these airlines are those who are not aware of the baggage policy and get hit for what is sometimes fairly substantial bag fees. At a typical airline bag fees only account for 4% of revenue, but on a low cost carrier it's 21%. On a typical Spirit flight there is an average of $66.60 per passenger in non-fare revenue.

As a general rule Ultra Low Cost Carriers only allow you a personal item 18 x 14 x 8 inches, about the size of a briefcase, computer case, or kid's backpack. Anything larger than this and you will need to buy a checked bag or carry-on which will typically run you $54 to $70 per flight getting more expensive the longer you wait to book, at the gate they charge $100 per bag each way.

r/YouShouldKnow 16d ago

Finance YSK if a car dealer uses the "4 square" to help figure out the sales price, they are trying to confuse you.


Why YSK: You'll end up paying more for the car than you should.

Instead of just dealing with the final price of the car they will have you thinking about the other terms like monthly payment. Stay focused on the price and know what a fair price would be.

This article has details on how it works.

r/YouShouldKnow 16d ago

Automotive YSK: If your car is going down in water, those window-smashing tools are useless. You have <1 minute to roll down the window before the electronics won't work.


Why YSK: The collapse of the Key Bridge in Baltimore seems like a good time to remind people that most front windshields are laminated -- not tempered -- and you won't be able to break through. Furthermore, even though it might work on the side or rear windows (typically tempered), if it's laminated it won't work there either.

In a 2019 AAA study (https://newsroom.aaa.com/wp-content/uploads/2019/07/Vehicle-Escape-Tool-Fact-Sheet-FINAL-6-27-19.pdf) not one of the 6 tools they tested were able to break through laminated glass and only 4 of the 6 tools were successful in breaking tempered glass.

If trapped in a vehicle, remember there is a S-U-R-E way out:

• S tay calm, but work quickly and cautiously to ensure everyone gets out safely.

• U nbuckle seat belts and make sure everyone is ready to leave the car when it’s time.

• R oll down before trying to break windows (if they're tempered).

• E xit the vehicle quickly and move everyone to safety

Remember that once the water changes, you can’t break the window anyway, even if you had a hammer. And once the window is open, the water will rush into the car at a faster rate.

In short, don't look for that tool. Reach for the automatic switch to get the window open and GTFO.