I have a Facebook page for the JT30 microphone. I post Blues Birthdays and sometimes pictures of my mics. It hit 500 Likes today, which is a big thing for someone as un-social as I am. I don’t know if I make any money from having all of these likes, but I do know that when I add something, lots of people spread it around.
Likes are different than friends. Almost anyone will “friend” you on Facebook, but I think that “Like” is a difficult sell.