I have an exfriend who is using photos I took without permission on their website. Many years ago I was friends with a couple who bred and sold horses. I took almost all their promotions photos. They NEVER paid me and rarely paid for my supplies. It was just fun because I was their friend. Well they ended the friendship and I wrote them a letter making it clear I wanted my photos taken off their site and I wanted all the negatives back. I got a firm letter saying "SOL" from the husband and they are STILL using my photos for promotion 2 1/2 years later. I really feel used and taken advantage of. It is like all that work was wasted and I got NOTHING from it. Anything I can do NOW...they are still using the photos. Should I chalk this down as a lesson learned?