several of my friends do it and they try YSM(Yahoo Search Marketing) and Adwords to promote their link for adsense and also for their affiliate.
But what I've heard from my friends that you must follow some technique there to make sure that that method will perfectly success or else..your money will gone..
erm..that technique..what they calling...aha..Arbitrage..
..I'm a student and don't have such starting money to do it..
this is an example one of my friend do it for adsense earning..and the result??wa..really good..two thumbs up..hahaha..
please check it here