Have you ever heard of anyone getting paid just to like, share and post stuff on Facebook every day?

I know this woman, she's an old friend, she's really pretty and she seems to use Facebook a lot, like every single day.
When I check in on my friends every once in a while I see that she's shared and posted a ton of stuff, always and consistently whether she gets any likes and comments or not?
I wonder sometimes if someone pays her or something?
I would never ask her that because I don't want to offend her, but I feel like telling her to try Answermug or something if she's bored, at least people reply more on q&a sites than facebook.
I'm one of her only friends who even comments on her posts.
Do you think she gets paid or just loves Facebook? Why?
What don't I understand about Facebook?