Heh, I think my copy of Opera has been watching my office browsing habits a bit haphazardly. Practically every page I go to has words like “tobacco” or “cigarettes” in it, so most of the banner ads displayed in the broswer bar are either for smoking products and promos, or for other anti-tobacco movements — but not always. The tobacco-related advertising is still interspersed with general-interest banners from other categories.
The funny part is, right after showing a Philip Morris promo banner, it switched to that of a law firm asking if I wanted help writing a will.