2 questions about adsense

1) I run a forum website with google ads : am I allowed to disable the ads for the members that reaches a certain ammount of posts, and announce it publicly on my website? i.e. only members with less than 50 posts would view the ads


2) my site is part of a network of forums about music. This is the only one which have ads, and the goal is to finance the others sites from only this one. Am I allowed to explain this to my members, in a topic called something like "Explications why there are ads on this website"
... or would google consider this like a begging for clicks? they seem to be really strict on this rule :/

 

1. Yes, you can do it.. and announce it publicly.
2. You better check it with adsense support.

 

Yea I would check with the adsense support team on that second question.

 

I would first check with adsense, then I would say explinations because that makes a lot more sense then explications