Browse and download from Flickr (OS X/Air)
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Viewfinder searches Flickr's four billion photos in a snap to bring you the images you need. You can search tags, titles and descriptions and sort by most interesting, most relevant or most recent.
Connected Flow - Viewfinder: Flickr search tool
Flickr, that awesome “social network” for sharing photographs, is probably one of the best resources for finding inspirational photos, screenshots, whatever a camera / computer can take.