I often use stockphotos from Deviantart.com. When I do that I always credit the photographer, plus that I have a gallery at Deviantart where I publish my creations, so the photographer can see how I used their photo. In almost every case they are curious to see how their photos, so generously given are used. (http.//gunsan.deviantart.com)

Anyway I found it a little different with the photos.com photos. First, it is almost always textures I am interrested in, and them I change so there often is no similarity with the texture I downloaded.

Another question follows naturally after this. if I buy a CD with stockphotos, have I still to mention from where I bought it??

This surely is a jungle!!!!