You seem to be a very biased with your words against social media but you also seem to lack a good understanding of the internet. The internet is not a safe place in any sense of the word and any form that you're referring to is an illusion. All the security suites and secure protocols, all of the filtering and authentications of the internet exist because of the very fact that the internet is a dangerous place to interact in naivety. So in regard to your comment, I don't agree with Facebook being a place solely for pedophiles or kids with disabilities, and you might be surprised how many people actually have full flourishing lives on there, and Facebook has simply become an extension to them. Trust me in three years, FaceBook and Twitter(and perhaps Google +) will still be dominant players in the industry, they will still be on the majority of societies cell phones and bookmarks, and they will still be as powerful in social movements as they are currently; granted they may have a few new bells and whistles about them by then.