I know I'm probably a little late on the band wagon, but I've never been part of a design team before. I like the idea of being part of a team and having a place to be part of an online community.
That being said, I just haven't been able to get up my nerve to apply at an established site. Enter the Use Your Words Challenge Blog. They're a brand new site, so there isn't the intimidation factor of breaking into an established group of people (nobody wants to be the "new kid"). Wish me luck!