I know that "plays" count as do "visits".
"Fanning" requires you to create an account. Not hard to do, but why would someone bother unless they wanted a page?
I think you can "like" or "share" on FB or twitter. (I think you can also "follow")

Like I said, I'm not quite sure how all this works. Don't even know how helpful it is in promoting or gigging, but I imagine it can't hurt.

Thanks for taking the time!

Mick