Most of the photos you will find on these sites are free from copyright restrictions or licensed under creative commons public domain dedication. You can copy, modify, distribute and use for even for commercial purposes, all without asking permission.
Via Jeff Domansky
Excellent list of stock photo sites with free resources and a few you may not have seen before. Recommended viewing for marketers, bloggers and PR people. 9/10
Excellent list of stock photo sites with free resources and a few you may not have seen before. Recommended viewing for marketers, bloggers and PR people. 9/10