Two new sites for finding images...

This is another search engine to find things on Flickr, but has some advance searching that is nice. If you search for cowboy, it will display a ton of cowboy pics. Then you can refine the search within a subset of pictures that are about what you meant, and say "hat" and get pics of cowboys with hats. Helps to zero in, without missing good pics by being too specific in the initial search.

http://www.picitup.com/picitup/index.jsp

This one is pretty handy. You search, and the results are displayed. When you click on a thumbnail of a picture, it shows a bigger version and adds it to a "history" of pictures you have clicked. If you think you like it, you say "add to tray" under the larger image, and it adds it to a container that you can download with one command at the end of the session. Give it a try.

http://www.zoo-m.com/flickr-storm