Need to hunt down a particular photo from the internet? Photo Search is being offered over at the Windows Phone Marketplace to help fill that need.
Photo Search does what the name implies, searches the internet for images based on keywords. Photo Search also has the ability to filter your image results by type (photo, faces, clip art, etc.) and size (small, medium, and large).
Once you find your image within the search results, you can save the file to your Windows Phone Picture Gallery or share them through email. In tinkering with the trial version, the search results were accurate (not indicative of the sample screen shots) but some of the thumbnail results generated a "image not available" error.
There is a free trial available for Photo Search to let you try before you buy. The full version runs $.99 and you can download either here (opens Zune) at the Marketplace.