Erku - 10:43 pm on Mar 22, 2013 (gmt 0)
Very interesting. I am reading these comments and not have finished yet. But someone mentioned about relevant ads. while it's true that they are great, there is something you need to know.
Relevant ads usually = cheap ads
Behavioral and retargeted ads = more expensive clicks
We have had many relevant ads, but we had more clicks, cheaper clicks, less revenue and more traffic going out.