Regular Singular Points

I was playing with Google AdSense for a project at work, so of course I set it up on Valence Band first (because this is my sandbox). What we can’t figure out is how AdSense decides what kind of Ad to place on a particular site. Does it rely on the META data? Content obtained via the Google crawler? It’s all a big mystery and fun to watch. I’m not expecting anyone to actually click on the AdSense ads; I’m just finding it interesting that Google believes people who visit Valence Band are looking for stock market advice (!) and free music downloads.