Quick heads up. I have been running a very limited and small promoted post campaign on Facebook for the last few weeks to just see if it works at all. I wasn't expecting to make a profit or anything, so I put a tiny bit of cash in just to see what would happen, more curious than anything else. To cut a loing story short, I set a promoted post up with a budget of 12 Euro. My page has 3k of fans. Anyway, first week I reached 18k people. The next week 11 k people, now this week just over 2k people. WTF, thats even less people than the page has fans. I know its not a lot of money, but it's the principle of the thing. Bad enough they now charge for reaching your fans, but it seems that the total reach per $ is getting less and less each week. If anyone is contemplating putting any real money into a promoted post, don't do it. I think it's time to move to Pintrest. Rant over.