See: http://adsense.blogspot.com/2010/05/adsense-revenue-share.ht...
Their customer service is abyssmal. This is intentional. Everyone doing business with Google needs to go into that relationship with eyes wide open in that respect.
reocities.com probably got banned because -- and this is a pretty important concept -- there is no incentive for their Indian quality rater to think "Hmm, although in five seconds that sure sounds like it is a typosquatting spam site which is infringing on the Geocities trademark and built on industrial strength copyright violation, I'm going to give them the benefit of the doubt and investigate this thoroughly."
Typically, AdSense pays much, much more poorly than individually negotiated advertising buys, which is why most major sites use it only for placing remnant inventory. (It isn't called "webmaster welfare" for nothing.) You also get the best results of it if your page is essentially an extension of someone's Google search, which is why eHow gets $2.50 CPMs from just one of the thirteen ads on their bingo-related pages: their traffic is overwhelmingly (60%) direct from Google for queries with demonstrable intent in commercial areas. (This is better than quadruple the performance of most sites I advertise on. sigh I'm giving aid and comfort to the enemy.) Demand Media gets the psychology of advertising. Other people wanting to do it should study and study well.