How someone will get banned because he put his adsense code with DP? I don't know anything wrong about revenue sharing. Some article directories does that.
Well, I don't know how revenue sharing is working but in these forums these are my guesses. You start a thread, an Adsense is placed right under your thread with your adsense. If so, then the top right in that same page should also be under your adsense id. Why? Google doesn't allow websites to have multiple accounts in one single page. That concludes to DP making about 200%+ more revenue if there was no revenue sharing in these forums. Not sure, just a guess.