I have the "unique" experience (read: a user here who was born in the late 80's) of going to school from the early-90's to the mid-00's (graduated 2006).
I was bullied in middle school for being of above average intelligence, to the point where I would be picked up and thrown across the locker room because someone didn't like me (I was also one of a very small number of Asian people in my town, which led to abuse by the school administrators and staff, but that's an issue for another topic). This was, of course, before I had grown to my current height of 6'4" / 193cm.
I grew up through the technology age, and by the time I graduated high school, texting had become commonplace, and I immediately started teaching middle school to high school aged kids (11-19). I also wasted a few years on 4chan, while at uni.
I've seen reputations get completely destroyed by cyberbullying. To provide context: The modern teen/pre-teen stores most almost all of his/her life online. Mobile devices make this extremely simple with automatic syncing, location services, etc. If someone takes a photo, more than likely, the exact GPS coordinates of where the photo was taken is saved in the image's metadata, and the image is automatically uploaded to Instagram or Facebook or Google or Dropbox, where it waits to be published.
Consider that a good portion of people's inter-personal communications, with friends and significant others, happens through text or other online media, and think about all of the personal and intimate details two people may be sharing, where everything can be screenshotted, logged, uploaded, and shared for the world to see in the blink of an eye.
Send a picture to the wrong person? Blackmail material. Send a picture to the right person, but then you break up a year later? Same thing. Post a picture "anonymously" on a website or forum? All of that metadata can be used to identify who took it and where.
In an age where everything (literally EVERYTHING) is logged and backed up, there's no room for making mistakes, no room for error, because everything can (and will) be thrown back in your face. (See; Links to old topic in this thread). Combine that with the psychological and emotional instability of anybody aged 11-19 (along with a wealth of cultural norms that condemn certain behaviours), and we're certainly going to have kids who feel that their only way out is suicide.