Ok I saw this today, it very likely could have already been posted but I have yet to see it. Regular old Adsense basically tells you that you can never have adsense on a page without any real content. Any page without actual content to Google can not be monetized with their system. So obviously domain parking is not allowed, unless you chose to write up a few articles - but again that would defeat the purpose of parking a domain. Recently someone sued Google over bad traffic coming from Parked Domains that were operating with Adsense - Google shrugged it off saying they couldn't moderate all sites on their network and that they would remove the urls if given because "parked domains are a violation of our terms". Well it turns out Google does in fact allow parked domains: http://www.google.com/domainpark/ Code (markup): The caveat is that you have to either have a lot of really good non-adult/spammy domains to even apply, or be really powerful in the domain parking industry to get Google's permission. Still the very fact that they allow adsense on domain parking shows that their terms aren't written in stone (at least for those lucky enough to gain admission).
It's lame that google allows it. But what did you expect, they make money on clicks. They are an advertising company first, and they'll make money any way they can doing so (why do you think they don't tell us what % we get from clicks on our ads). If a site is violating the TOS but generating thousands of dollars a month for google they'll probably not even take it down, or if they do they take their sweet time doing it.
You are not allowed to use Adsense for parked domains using a normal publisher account. The link you posted is for Domain Farms, which is a different system. Please understand what is going on before trying to make a case. Peace,
News broke a week ago that google was getting sued by an Adword client for having his ads show up on non-content parked domains. Google Sued For Selling Ads On Parked Domains A class-action lawsuit alleges that Google committed fraud, business code violations, and unjust enrichment by selling ads that were unlikely to generate conversions.