Why are some music forums shutting down?

[Guybrush]

I assume other social sites like facebook are competing with music forums for participants in music related discussions and that the other sites are winning. I understand that being a forum user is not the norm these days, but just about everyone's on facebook ..

If I want to discuss a specific artist or a particular scene, facebook may also be a better place to do so because then I would discuss it with members of a particular group on there dedicated to the subject. Here I'd just have to hope that someone else has interest enough in the subject to discuss it with me if I start a topic.