http://www.dipoll.com/blog/2010/11/six-steps-to-run-cheap-an...
OP, if you're reading this, how did you get such low CPC rates on facebook?
No offense, but this post just sortof sounds like bragging. What were you targeting? What were you bids? What did your ad actually look like? What sort of picture did you use (facebook ads require a picture, last I checked).
Etc. etc.
This is really interesting to me, because I've tried facebook ads before and done miserably with them. I was planning on doing some more reddit self-serve advertising this week, but if you can get traffic from facebook for as cheap as you're claiming, I would definitely give that a try instead.
This would be a really great post if you could share some of the research you did.