I have used Facebook CPC extensively for my e-commerce company and it has worked wonderfully ( with the right settings ). I have had over 5% of clicks convert in certain months.
However, I have had little luck with adsense for the same company. Honestly I think picking an ad network for your market is a much bigger decision than "tuning" a network you are set on using!
However, I have had little luck with adsense for the same company. Honestly I think picking an ad network for your market is a much bigger decision than "tuning" a network you are set on using!