Just a few months after Google began experimenting with banner and image ads on its Image Search service, the search giant is switching its strategy to text ads, according to a report from Search Engine Land.

Google began placing a thumbnail image or banner ad alongside image searches in October, in an experiment that was restricted to U.S. advertisers. Now, image searches show three paid search listings in a yellow box, similar to the AdSense ads that appear on Google's regular web search.