I have a twitter account (kentwilliams) which you can follow if you want. I subscribe mostly to interesting digerati because they sometimes say cool things. Twitter is becoming more mainstream though. I also now subscribe and read Lance Armstrongs twitters, among others.
recently I subscribed to Pete Carroll (USC football coach) and Steve Sarkisian UW coach). Pete noticed and actually sent me a real tweet. I knew I would like this guy even if I am a lifelong Husky. See photo..