Twitter is nothing more than a social-based RSS feed. I use it to see what my former co-workers are working on and what articles they've come across that might be helpful, and I also follow bands that I like (which can be hilarious). Other than that, I'm also following CNN Breaking News as well as the SlickDeals.net "crazy…
I was following Buy.com for the same reason (to get tweets on their deals). Then the woman in charge of their twitter notices decided to put her own personal tweets on there to. They seemed to really missed the purpose
Followed, because Twitter just doesn't suck up enough of my time yet. Older versions of TwitterFox (what echofon used to be before they uglified it) are much nicer, IMO. You can get it here: http://www.onlinedown.com/detail/20770.htm