All I can say is WOW! Absolutely unbelievable.
I've got a membership site w/ about 11k members where I rotate several CB ads. Been running the same ads in the exact same fashion for about 2 years now. They never did much at all...maybe a sale here and there once in a blue moon. I always chalked it up to the fact that they weren't really pre-sold or targeted.
Just did the 'new account' thing and the difference is just unreal. More sales in the past few days than I did all of last year. Exact same ads, same member base. Only thing I changed was my CB nick in the rotator I use for these ads.
No, Clickbank is not shaving or scamming people, but there definitely is something up with their tracking system. 1 year of stats vs 4 days of stats for the exact same ads is NOT just a coincidence or something that can be attributed to normal fluctuation in sales.