ContentAds
This is the future of advertisements, Contextual Advertising.
I am sure you must have noticed the power of putting your ads on websites like moneycontrol.com, Indiatimes.com and others Or in other words you must have noticed the price these website charge per CPM, which is primarily because they have your Target Audience.
Another thing that you might have noticed is that these websites are also a partner to Google's contextual network , So if there is a way that you can place your Google Ads on the site of your choice than sky is the limit.
And yes if we aren't talking about Google's site targeting option :