Years ago, I signed up to Google’s AdSense program to see if it would be possible to reverse-engineer its logic. The results continue to amuse (but, alas, not to make money). I write quite a lot about intellectual property, generally from a standpoint that’s highly critical of the content industries. When I do that, Google invariably comes up with ads for firms that will help me protect my intellectual property — despite the Creative Commons licence at the foot of the page.
I’m in Provence at the moment, and now it’s even doing it in French. Sigh.