@smilie, I had the exact
same experience! I have a classifieds site that targets a specific local region, and awhile back I did an ad blast to give it a huge amount of traffic all at once.
I gave Facebook a $2,000 budget to spend over 3 days, targeting only my state.
Just like with you, the budget depleted quickly, but Analytics didn't show the same numbers... not by a long shot. About 90% of the traffic I did get came to the homepage and left, never to return. And not a single click-through tried to view an ad or create one. This would be exceptionally unlikely for people looking for a classifieds site... they clicked on an ad that specifically talked about local classified ads, but didn't have enough interest to look through any of the categories?
I was concerned that maybe there was a design flaw on my end, but a similar ad with Google the next month had results much more in line with what I expected. So the problem was definitely the FB traffic, not my site.
But unlike you, I don't have a rep. I sent an email to their general address, but never had a reply. I honestly considered charging the money back, but never did.
FB stats says that only 14% of their traffic comes from the US or Canada:
And according to Google Trends, the countries that search for it the most are Albania, Algeria, Bolivia, Tunisia, Bosnia, and Turkey... all known for spam and scams:
Based on my experience, as well as the published numbers from both Facebook and Google, I'm absolutely convinced that, while yes, they do have a lot of traffic, it's mostly junk, robots, and scammers. That's just giving them the benefit of the doubt and assuming that they weren't falsely inflating the numbers on purpose. Either way, it was a complete waste of money for me, and I have no intention of ever giving them another nickel.