TechCrunch had a post almost a week ago about a Favor Exchange called Favorville:

Favorville facilitating the exchange of helpful acts. is a social networking tool which provides members with the opportunity to help and be helped by others. With Favorville, members can post help requests, offer help and help grow the community.

Of course, the site also has a rating system, just like you think it should have, when you’re used to sites like ebay.
I really like this idea! And apparently, there are a first couple of people in Frankfurt, Germany taking part in this!

Spread the word, this could easily become one of the most useful communities on the web!