Maybe these work in IE as well. I’m too lazy to find out.
Two web sites I look at a lot are Wikipedia and the Internet Movie Database. The usual method is to go to the page and then search for something, or to start typing the address in the bar in Firefox, spot an earlier entry and change it to get the item I want.
I’m not sure how long this has been available, but try going to the page bar (where you’d normally type in www.cumguzzlingsluts.com or whatever) and enter wiki scatology or similar. Voilá, you’re taken straight to the page. Similarly, try imdb edward penishands for an IMDB search.
There may well be other common searchable sites this works with. Looking at the status bar at the bottom, the system seems to work by checking Google first, when then forms the correct page URL and forwards you to the article you’re after. A bit like an advanced version of their "feeling luck" button.