http://en.wikipedia.org/wiki/Copycat_suicide
These kind of events are unfortunately not a new phenomenon. The hardest part is that there is in all probability, NO link. Teenagers on the whole are much more emotionally unstable, and unable to deal as effectively with feelings of grief and depression. If you add in some rather irresponsible media coverage and you create the conditions required for a spate of copycat suicides.
What parents and the media need to stop doing is sitting back and demonising social network sites, or emo music, and instead learn that there is a degree of responsibility that needs to be exercised in the reporting of these incidents, and education of their children