Today I’ve received email from Mozilla that they’ve taken down my add-on. They did that by request from Facebook as trademark infringe claim, because my add-on had Facebook in its name. As to not let the same happen to my text hosting service I’ve changed its name to Text Hoster. I hope that it would be enough as linking to Facebook is really an option for my service, not the main feature.
I don’t actually get why Facebook fights so much for not using their name by third parties as I was not making any profit from it and it was rather advertisement for their site than offence. But these are lawyers and nobody would ever understand them. I’m going to keep the service live as I can see that there is a lot of people who are using it. Lets hope that nobody would want to take it down.