I made a website about Tintin (the Belgian comic) where you can search any cell from any album by its text content. There's also a game where you have to find which album a cell comes from.

The owners of the intellectual property wrote to me and just asked that I stop using the domain name I was using (which was the name of a character) and that every cell contains a reference to them ("Tintin is copyrighted to blah blah blah"). I obliged and haven't heard of them ever since.