pay adwords to promote adsense sites ...
 

Q:
Does it work?
can adsense revenue cover the cost for adwords?

A:
Of course it can work. People have been doing this since Adsense and Adwords came on the scene. They don't just use Adwords, they also use Adbrite, Yahoo, and all the other PPC programs out there. It's called "Adsense Arbitrage", and at its simplest form, it's buying targeted traffic for a low price per click and converting them with higher paying ads. The trick is to bring in more than you're paying out. How do you think all those mesothomelia sites make money a few years back?