I retained an IP lawyer for a copyright troll a few years back over an image that we used on a blog that was credited properly when we used it, but the copyrigh

I retained an IP lawyer for a copyright troll a few years back over an image that we used on a blog that was credited properly when we used it, but the copyright troll bought the image, and was demanding about $12000 for the license. IP lawyer was only around $500 for retainer, and he made the troll disappear (not sure how, but also do not care). Sometimes just the threat that you will actually go to court over something will make a troll back off.