I just recently heard of the term stock photography. These are photos that can be used and reused for commercial design purposes. Most of the sites that offer them charge users before they can use the photos.
I chanced upon a site that offers free stock photos. The site which was designed by Hungarians is called Stock.XCHNG. What makes it interesting is that you can search photos from around the world, by different categories.
I searched for users from the Philippines and there were quite a lot of Filipinos (more than a 100) sharing their photos to the world.
So next time you need a nice wallpaper, here is one site you can try out.