I strongly disagree on what you have say.
It is the teenagers decision on what they should do. Laziness and obesity is something that can be prevent if they go out more and hang out with thier friends. Some Social netsites allow us to change our privacy setting and thus now a days people do not have to worry that thier private information will be made to public.
Yes i agree.Technology is more of a boon than a bane to society. We use handphones and Social Networking to communicate with our friends. Handphones allow us to talk to our friends who are further away from us and it is portable that allow us to carry it anywhere.