I personally hope that AdSense takes a big smelly dump without flushing. It would serve the Google crooks right. Maybe it is a result of Google's unfair business practices, more and more people despise Google everyday. As for me, when I see a Google ad, I click at least 30 times.
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ecommerce used to pay the most, now with recession, they have taken the biggest hit and hence showing effect on adsense
well, for me it didn't dip last month, so are you talking about adsense as a whole or just from the experience of yourself and other people on DP who said their revenue dipped?