The ranking of a website within organic search results could be adversely affected by the paid search strategy involving that site reports Search Engine Land.
The report comes as the result of a patent filing from Microsoft. The algorithm laid out in the patent would filter search results to remove duplicate listing, such as when two URLs point to the same webpage. But it also could remove a site from within organic search results when that website is also part of a paid search listing that appears on the same page or results.

The canceling out of organic results due to the presence of a paid search program would likely have tremendous impact on many marketers' strategies.