They are good things to keep in touch with people, I'll admit that, when your miles away from each other, but teenagers (not all, but some) would rather stay in and sit at the computer from dawn till dusk and stare at the computer screen rather than actually go out and do stuff. This was what my niece was like when she was 14-15 and still is to a certain degree now and she's 19. I just think these things, facebook, myspace, msn messenger, twitter, bebo etc etc are far to intertwined in peoples lives these days, and in some respects are very dangerous. If you go onto facebook, and monitor it for a couple of days, you will find people posting everything they do from day to day, where they are, what they are having for dinner, when they went to the toilet, and this information in the wrong hands is very dangerous, you never know who is looking or watching your pages.