BlogFrog. It's something I joined fairly recently, and I am having a bit of fun with it. You can see stuff about it down on the left side of my blog -- most recent discussions, people who have been visiting my blog, etc.
Right now, they are doing a promotion. For every "community" that gets 20 new participants during the remainder of 2009 (that means someone who posts a comment or starts a discussion on my community page), BlogFrog will donate $10 to The Children's Hospital. Each of those communities also is entered into a drawing for a $100 Target gift card.
So -- hop on over to my community here. Post a comment. Start a new conversation. Help me to help the Children's Hospital.