You have plenty of answers here, but I am curious why you don't just make your own website, optimized for AdSense? It's incredibly easy to do, and you keep 100% of your revenue.
There are no per-impressions in AdSense, btw, but you can get some really high paying clicks if you do your keyword research properly.
I have one website that averages about $5/day alone - on some weeks!
(With the World Cup, it went way down. $5/day is a good week - on normal weeks, it's about $1-3/day.)