My son does My Space, not me.
The whole idea of twitter is beyond me, I have read elsewhere about someone's twitter post, I really don't want to know that much about anyone. Don't care what someone is doing at this very moment and I am confident my life is not that interesting that someone would want to know what I am doing that often.
Besides, I spend way more time on the computer now, I don't need to find other ways. Would cut into my quilting / knitting time!