Youtube Ad Target Marketing?

I think this falls more into Data Mining category, but it applies a bit more of Target Marketing concept. I play Bass Guitar, and I am interested in Jazz and Funk music. Bass Guitar and Saxophone take big parts of Jazz Music. I was bored on this Friday morning, so I was web surfing. I typed "How to play saxophone" in Google, and the results from Youtube and many websites came out. What attracted me though, the advertisements on the side. Saxophone Lessons. This is a combination of Data Mining and Target Marketing. Marker or Google must know what the customer is looking for by Data Mining, and they find whatever products fit in to this customer's need. One who is looking for a Car is not going to click on this advertisement, but I am truly interested in this ad. (I actually clicked on it) Great strategy that Google ad people use.

Chap 6 Target Marketing