Favo.rs is on XWeek: May 21 - May 25.
Favo.rs allows you to create a favor you may want to ask friends to help you with. Your friends may help you with spreading the word about something, providing you with some answers or help you with some research. In turn they may ask their network and you can return the favor and help them. I am a member, love doing favors, and if you need a favor, you can find me here: