I have heard a quite of few people in irc channels, and seen places in forums which i can’t remember off the top of my head what forums it was, but from what i remember i seen, and i knew I was going to write about this. I highly dobut google is going to bann any one from using adsense that is related to seo traffic.If they was it would be a major fall down on there part, and advertisers, now I could understand if you was doing something illegal yea you would get banned, but please take a look at Google Answers

for more information.