I promised to deliver the stats on Facebook Flyers. I bought 5000 page impressions for $10 and my estimate was that 1-2% would click on the Flyer.
I got 25 clicks, thats a CTR on 0,5%, a little higher than what I got on AdWords Content Network, but much lower than Adwords shown in search result for the same ad-type. Avg CPC on Google Adwords is $0.50 and $0.40 on Facebook Flyers.
No deeper analysis, but it seems that Facebook Flyers is a good complement to Google Adwords and that the estimated cost more or less is the same (or a little bit lower in this example). I am, however, a bit disappointed, I dont know why, but maybe I have been bitten by the Facebook-bug and start to think that everything they touch turns to gold. 