Interesting point. The document URL in the original link is http://developer.android.com/distribute/googleplay/policies/ads.html http://developer.android.com/di

Interesting point. The document URL in the original link is http://developer.android.com/distribute/googleplay/policies/ads.html http://developer.android.com/distribute/googleplay/policies/... , which implies that it's part of the policies. But it may just be a supplement, with examples and guidelines. It's confusing that these guidelines introduces the concept of an ad opt-in which is nowhere mentioned in the actual Content Policy and Developer Agreement.