Fact to buy his rank to research motors: the link so put at the head of the results of motors is said sponsored. ,
It is possible to be situated in the very first places of Yahoo! by buying her position to Overture, the sales positioning service of Yahoo! newly reappointed Yahoo Search Marketing. ,
Google, via his commercial program AdWords, gives a visibility to the affiliated members in a frame devoted to the commercial links, often put above or on the side of the page of results of researches performed by the internauts, about which positioning is said natural. ,
Commercial links are mostly pointed out and often invoice to the « expense by click » (the affiliated member pays only when link is clicked by an internaut).