I have thousands of photos on flickr--all the pics I share here are linked from their flickr page. Since I began licensing them via Creative Commons, I have not had one single instance of unauthorized photo use. People used to contact me and ask permission (which I usually gave, because it was almost always to illustrate a blog-post or something), and sometimes they still do. But now, the ones I do NOT want copied, like pics of my daughter, I have as "ALL RIGHTS RESERVED." But 90% of my pics carry a Creative Commons Attribution license. This means that if someone wants to "borrow" my pic, they can, provided they attribute the photo to me, preferably linking back to its original page. They're also not allowed to alter my image or profit from it. I like this system, as it actually drives more traffic to my flickrstream, and by extension, to my blog, which means an eensy bit more money for me at the end of the month.
I have given use of my images to tons of organizations, even the City of Cincinatti in one case, but the only time I ever asked for remuneration was when Nike wanted to use one of my pics in some kind of promotional brochure. For FREE. Um, yeah...Nike? Come up off some dough first.
Another site I can recommend, that I think is about a thousand times better than Photobucket, is
PhoTrade . Once you sign up there, you can post your pics linking from PhoTrade anywhere, and every single time they're viewed, from anywhere, you get paid. Not a fortune, but hey, it adds up! Also, PhoTrade offers automatic watermarking and other protections to keep your photos from being "lifted" without your permission.
I want to figure out how to replace unauthorized photo-linking with this image: