You are paid $0.06 each time they click through from your site.

静水流深

http://www.searchtraffic.com/
Offer a small search box, which allows your visitors to search the web from your site. When a visitor to your site enters a search term in the search box, they are taken to SearchTraffic.com's site where the search results are delivered. You are paid $0.06 each time they click through from your site.
Commissions are paid monthly with a $25.00 minimum. If another webmaster signs up from your site you get 5% of their income.

Some publishers report on unsent payments and fraudalent reporting.