Take a look at this site. It is in clear violation of the TOS, specifically no gambling content and no adult content. Will Google kick the account holder out of the program when they recrawl it again? http://top10pokergirls.blogspot.com/
Well hold on a minute.. From what i saw, there is no "gambling content", instead it looks to be "content about gamblers" (unless i missed something). As far as "adult' - I've seen much worse, but it's definatly borderline. Does the site actually have "Gambling content" that i missed, or is it about gamblers and female poker-players?
Hmm... Dancing on the edge on two different TOS violations. It's at least 'about gambling', even if players don't gamble at the site. And the photos aren't nude, but suggestive. In any case, he'd probably do better going with other forms of revenue than adsense. (And he may soon have the situation forced upon him...)