If I see an ad on he DP forums that I'm interested in should I click it? If it's 'my' ad showing at that particular moment then it would constitute click fraud. So if all the DP members subscribe to the revenue sharing, and nobody clicks on ads for fear of violating Google's TOS, then the system grinds to a halt, no?
Check the bottom of the page: http://forums.digitalpoint.com/faq.php?faq=revenue_sharing#faq_missing_adsense_id
When you are logged in your Pub ID does not come in the pages you visit, so dont worry about the system, and click on the ads which you like without fear.