Personally, I think the planet would be a better place if we slooowed down a bit.. and some of these social network sites do in fact, incite violence, pack mentality, and any other number of negatives.
As with anything It can be a good thing, for some people, causes...although, it usually isn't. Personally, I'd rather do without it.
Get out and play some sports, volunteer at a hospital, play some music. Whatever you did 10-20 years ago.
Yeah, I have a twitter, and FB, and a Myspace... I never use any of them, very little value for me personally and typically have just disgusted me for one reason or another in the past.
Anyhoo.. who knows how the net will be next week.. maybe it all changes for the better.
Oh, and get of your smart phones too, you look like idiots, sitting on a beach, grinding your fingertips into a 3 inch screen while asking your friend for help in getting rid of all the spam emails your account seems to keep sending out to all your contacts.