lammert - 8:07 pm on Mar 15, 2010 (gmt 0)
You might argue if there is a contract at all. As an AdSense publisher I didn't sign any documents, nor did I receive paperwork from Google with a signature. You can stop displaying ads at any moment by just removing the code from your site without having to notify Google. On the other hand Google can stop serving ads to your site without notifying you.
If there is no valid offer, no acceptance by the other party and no requirements for termination from either side, I wouldn't call it a contract. And if there is no contract, why should Google disclose any information about the rules of the contract?