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9 Things You Might Not Know About LinkedIn

Carl Court, Getty Images
Carl Court, Getty Images

As the Facebook of the corporate world, LinkedIn has been providing professional referrals for its users—which today number —since its debut in 2003. If you have only a vague memory of creating a profile, we've collected some facts and tips on how to get the most out of the internet's most valuable electronic business card.

1. LinkedIn can penalize people for being too ambitious.

美女视频黄频大全视频LinkedIn wants you to reach out and establish connections with professionals who might be able to further your career, but the company would prefer you not turn into a pest: user accounts can be or deleted for sending out too many invitations when the recipients indicate they don’t know you.

2. LinkedIn can hurt your job search if you're not careful.

Sometimes artificial intelligence doesn't act very intelligent. When users update their LinkedIn profile to better articulate their current position or even change their status to “unemployed,” the site likes to urging your contacts to “congratulate” you on your new position—even if it’s the same position, or no position at all. If you’re in the job market and potential employers think you’ve landed something, you might be out of luck.  (You may want to turn off a feature labeled “activity broadcasts” so contacts aren’t alerted every time you sneeze.)

3. LinkedIn endorsements may not matter. 

LinkedIn

Job hunters quizzed about how much stock they place in those little “Endorsement” boxes in a LinkedIn profile had a quick answer: they . Because endorsements are so easily checked off, they don’t carry much weight. (And in the case of people who barely know you, might not even be accurate.) Instead, try to aim for “Recommendations,” the personalized mini-letters of endorsement that colleagues can post to your profile.

4. LinkedIn loves to see shiny new profiles. 

Your electronic resume might be so perfectly worded and arranged you’re reluctant to mess with it. You should: LinkedIn’s search interface places value on profiles that feature a revolving door of fresh content, even if it’s just a single update about a new project or a new buzzword for work you’ve already been doing for years. Doing so can in contrast to a laundry list of aged-out accomplishments.

5. You probably don't know you're being watched on LinkedIn. 

LinkedIn takes a sizable chunk of its profits from Recruiter, the site portal available to head hunters looking to fill jobs. By paying for the premium service, recruiters are anonymously, stick a dossier to your profile with their own personal notes, and generally peer in on you while you’re none the wiser. One recruiter told WIRED美女视频黄频大全视频 that someone who lacked a LinkedIn profile entirely had zero chance of getting hired, even if he came across them through another channel. A lack of one would be a “red flag.”

6. LinkedIn finally realized they sent out too many emails.

iStock

美女视频黄频大全视频To be a LinkedIn member is to choke on emails updating you on your contacts' updated profiles, your new job opportunities, and several additional reminders about each. In 2015, LinkedIn acknowledged their ticker-tape parade of messages was too much for most people and they would be reducing their one-sided correspondence by 40 percent.

7. There are a few words to avoid on LinkedIn. 

Are you motivated? Creative? Passionate? Congratulations—so is virtually everyone else looking for work. Catherine Fisher, senior director of corporate communications for LinkedIn, told 美女视频黄频大全视频 that those were three of the most overused and ineffectual adjectives in profiles. She advised users to show motivation—not just tell—by offering specifics on projects or jobs they’re passionate about.

8. LinkedIn had to settle a class-action lawsuit. 

In 2013, many LinkedIn members were perturbed to discover that the site had used their imported email contact list to send out invitations to join the site by using the original user’s name. to Business Insider, a California district court found that the site had not overstepped its Terms of Service policy with the initial introductory email—but it did美女视频黄频大全视频 take advantage by sending two follow-up emails. LinkedIn but agreed to a $13 million settlement.

9. LinkedIn isn't Facebook, but photos still matter. 

LinkedIn

Research has been done into how long job recruiters stare at profile photos, and they apparently like to peer into your soul for quite some time. Photos with “creative” filters, group shots, or clutter to endear you to viewers. Opt for a headshot that skips Photoshop and lets your personality come through without being too eccentric.  

Blue Apron’s Memorial Day Sale Will Save You $60 On Your First Three Boxes

Scott Eisen/Getty Images
Scott Eisen/Getty Images

美女视频黄频大全视频If you’ve gone through all the recipes you had bookmarked on your phone and are now on a first-name basis with the folks at the local pizzeria, it might be time to introduce a new wrinkle into your weekly dinner menu. But instead of buying loads of groceries and cookbooks to make your own meal, you can just subscribe to a service like , which will deliver all the ingredients and instructions you need for a unique dinner.

And if you start your subscription before May 26, you can save $20 on each of your first three weekly boxes from the company. That means that whatever plan you choose—two or four meals a week, vegetarian or the Signature plan—you’ll save $60 in total.

With the company’s Signature plan, you’ll get your choice of meat, fish, and foods, along with options for diabetes-friendly and Weight Watchers-approved dishes. The vegetarian plan loses the meat, but still allows you to choose from a variety of dishes like General Tso's tofu and black bean flautas.

美女视频黄频大全视频To get your $60 off, head to the and click “Redeem Offer” at the top of the page to sign up.

At Mental Floss, we only write about the products we love and want to share with our readers, so all products are chosen independently by our editors. Mental Floss has affiliate relationships with certain retailers and may receive a percentage of any sale made from the links on this page. Prices and availability are accurate as of the time of publication.

26 Fascinating Facts About the Human Body

Ridofranz/iStock via Getty Images Plus
Ridofranz/iStock via Getty Images Plus

You may not think about it very often, but there's so much to learn about the human body. For instance, did you know that people are actually covered in invisible stripes? In this article, which was adapted from an episode of , we take a look at some fascinating facts about the human body you might not know.

1. Only humans have chins.

Humans are the only with chins. While you may think every animal has one, that’s just what we tend to call the bottom of the head. But in reality, a chin is a very specific bone feature that extends forward from the lower jaw. Some experts propose that elephants and manatees have chins, but others argue that they’re such fundamentally distinct structures they shouldn’t be compared to humans. Experts still aren’t sure why people evolved to have ; the reason might have to do with eating or speaking, or they may just have emerged as a side effect from some other useful feature.

2. Humans have a strange bone called the hyoid.

A peculiar bone humans have is the hyoid. This is the one bone that doesn’t form a joint with another bone. Instead, it’s connected to muscles and ligaments. The sits between the jaw and the voice box and it’s used to keep all the lower mouth muscles in place. It also helps with swallowing and talking.

3. People that have more hair and innie belly buttons are more prone to lint.

Hairy people with innie belly buttons are more prone to belly button lint, which comes from fibers that rub off of clothing over time. Your stomach hair grabs onto the and pulls them into your .

Starting in 2011, a group of scientists started the to learn about what's going on inside these little caves of mystery, and as it turns out, it's quite a lot. from about 60 people revealed over 2300 total species of . And of those, only eight were identified as common, appearing in over 70 percent of belly buttons.

4. While it varies person to person, fingernails grow faster than toenails.

Your fingernails grow faster than your . Though it varies from person to person, typically, fingernails grow about a tenth of a millimeter each day, while toenails grow at around half that pace. There’s a correlation between nail growth speed and the length of the nearest bone. This means that your longest fingers have faster-growing nails than your shorter fingers.

5. Fingernails grow faster on your dominant hand.

美女视频黄频大全视频Your fingernails grow faster on the hand that you write with. No one knows why.

6. As you age, your nails change.

, they grow more slowly and then nail cells, known as onychocytes, start accumulating. That’s why older people have thicker toenails. Fingernails aren’t as noticeably different because people manage them better, plus our toes a lot of damage throughout our lives.

7. It's a misconception that people's hair and nails continue to grow after they die.

What’s actually happening is the skin dehydrates and then recedes. So it looks like the hair and nails are getting longer, but in reality it's actually the skin that's getting shorter.

8. Breastfeeding will not cause breasts to sag.

It's a common misconception that breastfeeding causes breasts to sag. Pregnancy itself might affect in that they may stretch and then recover differently. But research on breastfeeding confirms it will not cause breasts to sink. A behavior that will, though, is smoking.

9. Hands and feet contain over half the bones in an adult body.

With around 27 in each of your daddles—that’s an old slang word for the hands—and about 26 bones in each of your plates of meat—which is another old slang term for feet—these appendages account for over half of an adult’s bones, of which there are around 206 total. But that’s not always true. Feet mostly contain cartilage at birth, then bones form over time. They don’t fully harden until humans are in their early twenties.

10. You can fracture a rib just by sneezing.

While it's rare, it is possible to fracture a rib by sneezing. In 1885, there was an article in the about a 72-year-old man who fractured his eighth rib while sneezing. Sneezer美女视频黄频大全视频, by the way, is a 1940s Australian slang term “excellent, wonderful,” which could definitely describe a good sneeze—but probably not one that would break a rib.

11. You can see stars if you rub your eyes.

If you've ever seen stars while rubbing your eyes, you’re not imagining it. The cells in our eyes are interpreting the pressure as an input, and treat that the same way they’d treat a light input.

12. Goosebumps are pretty much useless.

Goosebumps are frequently associated with adrenaline being released in the body, like when we’re feeling a particularly strong emotion, for example. They used to be important when had way more hair on their bodies because goosebumps美女视频黄频大全视频 would elevate that hair and make a person look bigger when they were in danger. But now, they’re a pretty useless feature.

13. Spleens help the immune system.

The spleen美女视频黄频大全视频 is surprisingly not totally useless even though that was the belief up until the 1950s. It’s OK to get your removed, but it does assist the immune system. While blood is in the , the immune system creates the necessary antibodies to fight bacteria in that blood. A fetus’s spleen also creates red blood cells.

14. The appendix seems to help the immune system.

It's OK to get your appendix removed, but the organ also aids the immune system. In 2018, Dr. Mohamad Abouzeid, assistant professor and attending surgeon at NYU Langone Health told Mental Floss, "[The appendix] has a high concentration of the immune cells within its walls." Experts don't know exactly how the appendix affects the immune system, but it seems to play some role in keeping us healthy.

15. A fetus's face forms in the first three months after conception.

During the first three months after conception, a fetus’s comes together, fusing in the area of the top of the lip. That means the dent under the nose, which is called the philtrum, is evidence of a person's time in the womb.

16. Babies don’t just see in black and white.

A newborn baby has pretty terrible vision美女视频黄频大全视频. But it’s not true that they can only see in black and white. In reality, if there’s a large amount of the color , they can identify it, but only if it appears in front of gray. Newborns have about 5 percent of the visual acuity that adults do, but it improves quickly and takes only around six months before they can see about as well as a grown-up. Though there are some eye tests that babies can school adults on, which are ones centered around . For example, up until 6 months old, a baby can tell monkeys apart, while older babies and adults can’t do that.

17. The liver is very good at regenerating itself.

In fact, with just 25 percent of the original liver tissue, it can regenerate. transplants are generally only needed if someone has experienced severe damage to the organ or an injury.

18. Some people are born with three kidneys.

美女视频黄频大全视频Some people had a kidney split while they were still in the womb, so they're actually born with three. This makes them candidates for donation, but the problem is often don't know when they have three kidneys.

19. A person's large intestine can be stretched 5 feet and the small intestine can stretch 20 feet.

The intestines are pretty long: The small intestine stretches to about 20 feet and the large intestine hits 5 feet. The surface area of your intestines could take up two entire tennis courts, although some Swedish researchers have downgraded it to studio apartment size. Compare that with a , though, which has over 700 feet worth of intestines.

20. The stomach can hold up to 50 fluid ounces.

The stomach may not be tennis court size, but it can hold around 16 to 50 fluid ounces. It's interesting to note that a Trenta size at is 31 fluid ounces, which is more than many adult stomachs can technically hold.

21. The neurotransmitter serotonin can be found in the gut.

Our gut contains 95 percent of the neurotransmitter serotonin美女视频黄频大全视频. In fact, the , with its 100 million neurons, is so important to mood that it’s sometimes called the “second brain.” Medications that affect serotonin will often also cause GI issues.

22. The skin is the largest organ.

美女视频黄频大全视频The skin is considered an organ and it's the body's largest one. An adult may have 22-square feet of on their body. Basically that means your skin could comfortably stretch across half the floor of the typical bathroom.

23. The skin makes up a large part of your body weight.

Fifteen percent of your total body weight, to be exact.

24. The ovaries are in communication with the brain.

It was once believed that the ovaries美女视频黄频大全视频 and sort of sat dormant until they were needed, but the ovaries actually communicate with the brain in ways we’re just learning about. The hypothalamus and ovaries work together to make sure that the levels of hormones in the ovaries, like estrogen and progesterone, are where they need to be.

25. Humans are covered in stripes.

The human body is covered in stripes美女视频黄频大全视频 called Blaschko’s Lines, which are typically invisible. They’re cellular relics of our development from a single cell to a fully formed human.

26. Humans glow, but our eyes aren't able to detect it.

Humans glow, but it’s just around 1000 times weaker than our eyes can detect. Every animal that has metabolic reactions because in that process, photons get emitted, causing light. In 2009, a study was published in which a camera captured the bioluminescence of five men. According to that study, our upper lights up the strongest. And the glow is on a cycle; when we’re on a normal sleep schedule, our bioluminescence is at its strongest at about 4 p.m.