Re: selling photos you don't have the rights to
This has been going on for a couple of decades, if not longer. I had a photo 'scraped' from a website that was used in an online competition by the [redacted][redacted] barstweard and the thing won. I only found out about it a year or so later and because the scumbag lived 5000 miles away taking legal action was next to impossible. After a long exchange of legal letters the photo was removed from the competition website. I had to prove that the photo was mine. Thankfully, I had the negative strip (remember the days of film...?) which was good enough.
Since then I have not posted any image on the internet that does not have my copyright embedded. Also, I don't post images where individual people can be identified. That saves me a load of grief.