Just saw this post and many of the reasons also apply to organisations and individuals outside of music. I don’t understand why many business point potential customers to a facebook or myspace page.
Especially, when they are not controlling the experience.

It’s your’s… forever

I’ve said this more than once in this post.

You get the point right?

Your Facebook Page and your Bandcamp page are NOT yours. They belong to other people and cannot be forced to do all the things that you might want to do.