I was looking at some car sites before and noticed that the ads on the side of the articles were all targeted to me: See cars in (name of neighborhood)! How do they know where I am? Does my broadband IP (FIOS) identify me as being in this neighborhood? I always thought it was randomly assigned. The PC is clean of spyware etc. I've seen places like that that list your IP address, that's pretty easy to do, but these were the first that named my town.