I use Easyhits4U mainly to display my banner. The click ratio is average, but the bounce rate according to Google Analytics is amazingly low, even though my site isn't really targeting the typical "traffic exchange audience". I also like the 1:1 + money surf ratio, it's not easy to find as good. Well, great exchange. (<a href="http://www.wiki4games.com" target=_blank>David</a>)