Bullies and rule-breaking may have existed before the digital age, but at least it was all within plain view. As our kids become old enough for social media, the possibilities of what's happening behind all of those screens is simply terrifying. In the June 2014 issue of Vanity Fair, 65 percent of parents  said that they worry more about their kids surfing the Internet without supervision than they do about their riding or skateboarding without a helmet. And for good reason. Check out these seven trends happening on social media that every parent should be tuned into.
Source: Thinkstock 
It's had such dangerous repercussions that it's been blocked by Instagram, but the trend is alive and well on Twitter. Even more frightening? A quick search of #ThighGap resulted not only in girls sharing their scarily skinny selfies, but also news outlets promoting weight-loss stories on the topic. Mixed messages, much?
While it's intended for adult use, this is a good one for parents to have on their radar in case you overhear your kids talking about or attempting to download it. Formerly called Bang With Friends (really, need we say more?), the premise of Down  is for Facebook users to send private messages to friends within their network alerting them that they either want to "Get Date" or "Get Down" with them. Yikes.
The popular photo-share site Snapchat has two scary ramifications. First there's its intended use — to be able to share photos that disappear just seconds later, leaving parents without the ability to track what they're doing on the app. Secondly, your kids may think they're sharing pics that will only be seen by their recipients, but all their friends have to do is take a screenshot for the photo to be dispersed on the web.
Source: Snapchat 
The addiction that comes with reading complete strangers' deepest, darkest truths is understandable. But for impressionable tweens and teens, sites like PostSecret  and Whisper  can be dangerous confessional outlets and sources of inspiration for unhealthy and unsafe actions.
It's no surprise that Instagram and other photo-sharing sites serve as sounding boards for adolescents suffering from body image issues. Do a quick Instagram search for photos tagged with "#Frail," and you'll be appalled at what (mostly) girls are sharing. One photo included the comment "Still in my pajamas and still in bed but here's a belly check. Still fat," along with hashtags for "anorexia," "bones," and "bodycheck."
Whether it comes in the form of suggestive selfies or R-rated banter, the amount of sexual innuendo exchanged between high-school-age kids (and in some cases, even younger) would alarm and upset most parents.
A relatively new gossip app called Yik Yak  (free) allows users to anonymously post news, shout-outs, and jokes for people in a set radius to read. The scary side effect is users anonymously posting cruel comments about their peers — from calling a classmate a derogatory term to wishing them dead. Though the app is intended for people ages 17 and older, middle and high school students have found their way onto it and are using it to bully their peers. One student even took to New York Magazine to write about the effect the app has had on his classmates , saying it brought his high school to a halt.