You do not specify that you retain copyright for this photo. Does that mean you will allow me to publish it on my site (with a pointer to your site)? Even if that's your intent, it's worth a note on your pages that "You retain all rights to reproduction"
Copyright is a big area and I'm not a lawyer. While I am not surrendering any rights (except perhaps the right of exclusive use, but that's not a right, that's a contract term), I am granting you the right to use my images as you see fit in your applications. I'm glossing over the issue of releases (short answer - don't use pictures of people because those people can sue) and I generally don't have releases for locations/lighting/brands and so forth. While I could adopt a specific license (GPL or Creative Commons) so far, I'm just roughly in the spirit of those licenses. I'm taking a leap here that given a chance, people will mostly do the right thing. So far, it's worked out pretty well.
