Upload & Sell: Off
Also seriously, how does a photographer go about stopping the rip-offs?
Any one photographer whose work is compromised by copyright infringement can first get a cease & desist order from his attorney. Then, in a perfect world, the photographer can sue.... if he wants to go through the aggravation. The site can be down quicker than blinking an eye so screen shots are the only proof. And IF there was a class action suit by many photographers (years) and it was successful (?) the perpetrator would be wiped out IF he had money, or doesn't declare bankruptcy first. It's a slippery slope. So to answer your question, there is little incentive for the photographer to go after the blogger, or website "rip-off" originator. Going after an established company like a brick & mortor housed publishing company with printed proof is usually more doable, but again can take years and a lot of your money (legal) in the process.