[jefftk]

Good point on the cookies!

> That’s why you only need to search for a car once to get ads for cars for weeks.

I don't think that's right? If you search for things about cars and then click through to a page about cars you'll get tagged with all sorts of advertising cookies, same as if you did that with any other search engine. But I'm pretty sure just searching for something on Google won't affect either (a) what ads you see on future Google searches or (b) what ads you see on non-Google pages around the web.

(Disclosure: I used to work on ads at Google, though not search ads.)