Social networking sites are disaster
No, because we never needed them before, so why now? We have functioned as a society for hundreds of years with nothing more to communicate with others but a pencil and paper. Is it easier and more convenient? Yes. Beneficial? Not really. Not when you take into consideration that people could be doing so many more things in their spare time, instead of looking at a computer screen, watching what other people are doing. Which is also staring at a computer screen.