Thanks for the replies both of you. trandoductin, I'll take a look at the advanced imaged search, but I think I hit the jackpot with Pixabay - their search engine returns great results, and ones that actually match your terms (unlike the 'royalty free images' websites), and they state categorically that their images are free to use for whatever purpose, even commercial. They even note that no credit is required.
Ofnuts, you pretty much share my thoughts on the subject, but with somewhere like Pixabay it's comforting as it removes any possible guilty feelings you may have about using others' work.
Ofnuts, you pretty much share my thoughts on the subject, but with somewhere like Pixabay it's comforting as it removes any possible guilty feelings you may have about using others' work.