BlogKits, founded by Jim Kukral, is a subsidiary of ForgeCorporation. It’s the first “global performancing marketing firm has been launched, with the goal of helping to monetize blogingsphere. BlogKits is the world's first true performance marketing network that’s built just for bloggers! to generate revenue from their blogs.”
BlogKits works on a cost per action (CPA) model. That means that you get paid when a sale is made. So if a blog reader clicks on one of your BlogKits placed ads, then they go to the website and buy something, you then get a commission for that purchase. For example: If you referred someone to XYZ Online Store and that person bought $300 worth of merchandise, and XYZ was giving you 10% of that sale... you would make $30 instantly, just for the referral.
BlogKits being non-contextual (ads aren't served on your blog based upon content automatically), can be used simultaneously with Google AdSense.