As the world debates what Facebook is really worth and how much money it can and will make, its newish "Promote" button on business pages appears to have a lot of potential and some pitfalls.

Any post made by Facebook on your behalf is completely invisible to you, and only shows up in your friends’ & family’s news feed." In many cases, these are innocuous .

Facebook asked me if I wanted to promote the "important post." I was curious how much that would cost me. Answer: $49.