The mass AdWords banning that has continued on since late September of this year is just going to get worse. Google told me last night that they are stepping up the account level bans and making them permanent on the account level.
Nick Fox of Google told me Google is now better at enforcement and able to offer more comprehensive enforcement of their existing policies. This is why they have decided to step up these efforts by banning not just sites from advertising, but complete accounts and permanently stopping them from signing up for new accounts (they have ways).
In the past, I complained that Google replied to AdWords advertisers with lame responses. Fox promised me that the communication process with these account bans have been improved. All accounts that are being banned will get an email from Google telling them they have been banned and instructing them how to appeal the ban. All appeals will get a response from Google, no matter what.