BTW, the story about Social Networking in Russia and suicide is a city legend called "Blue Whale". There are no proof of it existing, but there are kids who were playing along with those jokes, mostly people in need of attention from parents, etc.
Still, there are reasons to believe that the original rumour was started by government itself to give them a reason to tighten censorship on Russian internet, which they are doing from before that rumour and keep doing now.