During the beta testing stage this site guarantees to get your site to #1 on Google and 39 other top search engines within 120 days
absolutely free. It will stay there for 7 days after which you will need to bid on your keywords or use accumulated credits to keep it there for longer.
The way I see it, even if you only stay for 7 days it could make a massive difference to your income whether you decide to stay or not. Its an easy sign up and if you also join as an affiliate you can accumulate credits to keep your site at #1
It's totally free so I recommend you go take a look at:
http://www.themoneyworldonline.com/number-one/