Good discussion about Google's Adsense on Problogger. And here's Google's Webinar on the subject. The upshot, it appears, is that Adsense provides pocket-change, if you're lucky, but won't pay the mortgage. Anyone here making significant money from Adsense ads?
Also, I've heard some people in the industry that Google pays stand-alone bloggers only 25% to 40% of each Adsense click, but gives bigger players 60% to 70%. The conclusion, if this is true, is that it might pay off for small fry on the blogs to organize into larger networks--or to sign on with networks such as Burst Media.