Social Networking

In the past year, I’ve signed up for all sorts of social networking sites.
I started with Myspace, then moved to Facebook, and over to Twitter and Jaiku and Utterz and Tumbler and so on and so forth.
Whenever I update one site, I feel obligated to update all the rest.
It’s not always automatic, so copy paste copy paste for hours a day.
What I don’t understand is with all this social networking, sitting in front of my computer every waking hour networking with other people, when do I have the time to go out and actually be social?