Compfight.com is a powerful new photo search engine that works with the Flickr API. You can use Compfight for personal or commercial purposes, and perform various types of searches, making it a very flexible tool useful to a wide range of users. The basic search is a keyword search that will look through Flickr tags and return up to hundreds of photos tagged with your keyword. If your results are weak, you can change to an ‘all text’ search that will also hunt through photo titles and descriptions to find your keyword. Click on any thumbnail result and you’ll be brought to the photo’s original page on Flickr. A ‘Blue Bar’ underlining a photo thumbnail on the results page indicates that Flickr is holding an original of that photo, and by hovering your cursor over a bar, you can even see the pixel dimensions of the original. You can turn on the Creative Commons feature to find licensable photos, or Safe Search to keep your results free of possibly offensive content.