Ok, I've read a few threads here regarding Adsense earnings and I'm trying to figure out what the exact story that is going on.
From about May of last year until December we experience some great months of continous growth even with some traffic reduction. Page RPMs were in the $15 to $20 range with Page CTRs 2.7 to 3.6%
Starting Jan 1 - a huge drop (without traffic or page CTR reductions) of about 28% in revenue. February looking to be even worse.