part of the terms of using it include:
Privacy: You may not use any ad, nor its customizable contents, to collect personally-identifying user information.
But it is aimed at direct reponse and interactive ads... now how can someone use the display ad builder with the call to actions suggested and NOT collect personally-identifying information?
If a customer clicks on an ad with the call to action "BUY NOW" and subsequently fills in an order form... it is a violation of using the display ad builder due to them giving personally identifying information... you need to collect some of that information (name/email etc) to be able to do any customer service if required.