For me, this site shows an ad about wine - which makes sense since I work for a company that deals in epicurean goods, with our primary product on our site bein

For me, this site shows an ad about wine - which makes sense since I work for a company that deals in epicurean goods, with our primary product on our site being wine. Based on my browsing habits, it is an appropriate ad to show to me, from a user analysis point of view. Does it suck that it's not related to the article - perhaps - but that's not what will make the most money. Just because you are reading a single article pertaining to dinosaurs, doesn't mean you have a history of being interested in dinosaurs. The play games ad could be remnant inventory as others pointed out, it could be based on your usage analysis (do you play a lot of games? or share a computer with someone who does?), or lack there of if you have circumvented ways that Google can snoop on/analyze you.