It just occurred to me that I never see ads on Google. I'm not sure why. Possible reasons: I have an old computer, use out-of-date browsers, and my computer is

It just occurred to me that I never see ads on Google. I'm not sure why. Possible reasons: I have an old computer, use out-of-date browsers, and my computer is set to spanish (but almost all search results are in english), browser set to 'block web advertising'. But..never any ads, at all - no sponsored results etc, nothing, not on the side or on search results or at the top of the page. (I have seen a load of them on other peoples' computers' google searches, so I know what they look like.)