I submitted my site here earlier and got some great feedback. Based on this feedback, I totally redesigned the site. I'd love to get some feedback on the new design!
The idea is that you host our ads, and in return you get to display ads on our network. It's a 1:1 ratio. Our ads are not meant to replace your adsense, but to complement it. (our ad units fits nicely next to a banner or skyscraper)
Site: www.adexchanged.com