pixar24 - 10:02 pm on May 4, 2012 (gmt 0)
"The real key to AdSense is traffic, targeted traffic, traffic in a buying mood, and lots of it"
Couldn't say it better myself.
I have an income from Adsense, but my traffic is not targeted traffic, and not traffic in a buying mood. But I have a lot of visitors so that makes up for the other two.