The Big Money reports that Google has made a "minor shift in its policy that has major implications." Instead of banning scammy ads for bogus teeth whiteners and stomach flatteners, Google will now ban the advertiser itself, "effectively neutering the advertiser's ability to shift from one ad and shell site to another."
Think of it like the struggle between the police and a graffiti vandal. Up until now Google has only been erasing the tags after they've been put up. Going forward, they're going to take away his spray cans and put a GPS collar on him, making sure he never does it again. It would be a principled stand by any company, but especially by Google because of its position in the market. I worry, though, that the rest of the industry won't pay attention. On this issue, Google might be a leader without any followers.
Google Does Non-Evil Thing: Bans White Teeth, Flat Stomachs