Too Cool For Me? is a fun little side-project I've been working on. It's all about and only for Twitter. You login, then install a bookmarklet then when browsing twitter you can see who follows you and who is too cool for you.
For me it's a chance to try some new tech and at the same time scratch an itch I had. The results can be quite funny but also sad too when you realise that someone uncool isn't following you even though you follow him/her.