Flickr has an amazing collection of wallpapers if you are looking for a perfect wallpaper to pimp your desktop. Although Flickr has a great collection it is not convenient to screen large number of wallpapers at any time.
Wallpapr is new search engine designed for Flickr photos. Type to search for wallpapers using keywords of your interest, you will get results as thumbnails in Wallpaper. You can set 20, 40 or a 100 photos to show after search. Click on any thumbnail it will take you to Flickr photo page from where you can download the photos.