Google pulled the plug on Dec. 3, 2012, I verified by sending out emails on Dec. 4th & Dec. 5th, no Adsense clicks reported via Feedburner, nothing, noda, zero, zilch...
I can still monetize my list via Feedburner, but that adds an extra step/click the traffic has to complete in order to turn a profit from the email list. It's all good with regular site traffic, but the Feedburner/Adsense had some awesome CPC/CTR. I'm still running Adsense on my sites, that hasn't changed.
D@mn Google for taking Feedburner/Adsense away (j/k)!
I've got a non-IM self made product in the works that is already profitable from testing, just need to go all out & expand.