I was going to write a long post about Twitter and how useful it is. I've spoken to several people who think it's all celebs and teenagers. There's a fair amount of that, but there is so much more. Lots of people are using it for very useful purposes. Twitter demographic statistics can be found here.
Anyway, like I said, I was going to write a post about Twitter, but the post I wanted to write has already been written by Scott Hanselman. If you aren't on Twitter or don't know much about it, I highly recommend you read this post.
Interested? Sign up here. If you do, then follow me.
Also check out his video about Life with Diabetes and find out how you can make a contribution to help find a cure.