Trada
http://www.trada.com

Trada is the world's first and only crowdsourced paid search services marketplace, where a community of over 1,000 paid search experts - Optimizers - work and are paid on their performance. Advertisers who run their paid search campaigns on Google AdWords and Microsoft adCenter through Trada will have multiple Optimizers working on their campaigns at the same time. The diversity of thinking, expertise and sheer force of human power that come from a group of people working in a pay-for-performance market get results an individual or software application could simply never achieve.