I just came across this today, and would like to pass it on to anyone who blogs for money. You know, the pay-per-post, sponsored review, here's a link and 50 words type of deal? Right.
Here's a site that offers a free service to advertisers and bloggers. It's like a facebook for blogs, and advertisers can search the database by alexa rank or page rank and find the right ones for them.
I think with the domain and the free service this site is going to be huge.