When Amanda Todd killed herself there was a fury which the internet-related deaths of hundreds of others failed to awaken. There was media hyperbole and the ever-present pointing of fingers. Yes, it was unquestionably a horrible, senseless ending to a young life. No, I don't think I'd blame teenagers for it – exclusively, at least. Teenagers, for all their precocious brightness, are almost without exception immature and are generally pretty impressionable as well. They are caged in shitty little worlds and it makes them inexplicable to older people who have escaped. Sometimes they feel like they can't escape, sometimes they think life sucks, and these and other things make them intolerable.
They're not particularly nice: they might respect their elders (which is immensely satisfying to smug elders), but they will go after each other with a wonderful blend of hatred and conviction one rarely sees outside of politics or ideological clashes. They're mean as rabid dogs: and in a culture which is arrogant enough to blame them while simultaneously encouraging them, it doesn't seem like there are a lot of people who really care. Society loves stories like these. They appeal to baser natures: outrage, righteousness, fury, voyeurs. They are easy to explain: evil kids, internet anonymity, lack of empathy, etc... The story needed to be told, but it was without reservation a story which was disgusting. Nothing about it seemed right, and looking into it was looking into the abyss of the internet and pretending to know what the fuck. Experts ran their mouths about how parents could prevent kids from falling into a similar trap. Punishments were devised. The police were all over it.
Truth of the matter is that such a thing will inevitably happen again, and something worse will undoubtedly happen if the law tries to get more deeply involved, pushing the criminal verges of cyber-harassment further underground where less idiotic and more dangerous people will continue in impunity. The internet is the last frontier of group psychology, and the denizens are very suspicious of lawmakers. There are many reasons for this, many of them despicable, but that's the way it is.
When I was a teenager cyber-bullying was nigh-impossible, because you could block people on MSN Messenger when they bothered you and few people were poser enough to use Myspace. The Digital Age was in its infancy: cameraphones were shitty and rare; cyber-bullying happened, but it wasn't a big deal because people lived offline. You simply weren't tethered and beholden to a 24/7, identity-bound life on the internet unless you were a nerd. Hints of a darker future were around, but those hints are in any past. Generally I bode my time until my personality had settled enough that I wasn't an insufferable shit, and then things started to look up. Towards the end of my tenure as a teenager high school was something that I had taken a positive leave from, and so distant it didn't always seem like a miserable prison anymore. In an even more distant past, as a veritable child, I logged into chats and started trouble for the hell of it on slow nights. Lots of us did, and following generations continued the tradition until...
Internet culture is filled with trolling. Often it is done with in a lighthearted spirit, and anyone who gets offended or falls for it is considered an idiot, ridiculed, and forgotten. 'Griefing', an online-game version of trolling, is almost a respectable pastime, and some 'griefs' have become legendary in their own right. Generally, when you see a troll on the internet, you are dealing with children, teenagers, or the mentally unfit. Sometimes they are amusing. Their antisocial stance would be interesting if it were self-aware and purposeful, but as a provocative measure it has few peers. Trolls are determined and capable of things many adults would balk at, such as trolling public facebook memorials about the recently deceased. Long story short: keep it private, or (I hate to be the one to say it) keep off the internet altogether because that shit is trashy, full stop.