What is *fascinating* to me is that most of my revenue is coming from just one of my sites!
That's the same piece of information that scared the **** out of me. Way too much of our Adsense revenue is coming from one site. Cool now but all that needs to happen is getting kicked out of Google's index again ala Florida and we take a major income hit. We're now pouring a lot more time into pumping up the content in our other sites.