Way back in the day when they first started when everyone was using them, they hit everyone with a left-hook and the audit numbers were simply "f'd up" I remember most people got their revenue cut in half, some even way more, ya it was pretty bad. But that was a year ago or something. I hear now they audit about 10-15% of your revenue, so expect a 10-15% drop, just to be safe though, expect a 30% drop, at least you won't be surprised. I am using them again and I hope they have improved.
That's a nice CPM, congratulations. I've been using Chitika for a number of years and after audit generally lose about 10%.
Stop making these companies rich on your inline ads. Adsence also.. This doesn't pay and it's a waste of time.