Any other Thirty-Something Blogger using twitter? If so, I'm imelda on twitter if you want to follow.
If you aren't up on Twitter, its a web application that asks the question, What are you doing? You need to reply in less than 140 characters. You can use the web, a mobile device, IM or 3rd party applications.
I use celticbuffy. Twitter is something I'm trying to see if I like it, as so many other people seem to enjoy it. I just keep forgetting to log on when I'm on the computer!
If you use Firefox, I'm a big fan of TwitterFox -- tweets pop up in a little window (you can set how often) so you can see when something new is posted, but it's not too annoying if you're busy and working on something else. It automatically logs you in as long as Firefox is open. Plus, you can reply in the same window and see direct responses, even from people not on your following list.