I recently posted a youtube video of us performing Richard Thompson's song Beeswing. I did put Thompson's name in the title (February Sky--Beeswing (Richard Thompson)). I did get a notice that someone decided to run ads on it. I let it go, because putting up "covers" is a very grey area on youtube. I have contacted Thompson's website about what they thought about people performing and posting his songs on youtube and never heard whether they approved or disapprove. So far the songs we post that my wife has written, or the traditional stuff I do has been flagged like that. In that case I would dispute the folks involved. I have gotten permission to post our versions of Dave Carter's songs, so I ask when I have the chance. If there was a licensing thing one could do like on a physical recording, so the writer's could get royalties, I would go that route.