for the example, we're using the latest version of mozilla firefox and i've chosen 2 sites which look pretty obvious as to what they are-zales dot com and diamonds dot com. annnnnd let's assume for the time being that they were both entered into the address bar at the top.

at this point, they are now logged in the browser history. when we click the dropdown list of recent sites or begin typing, we see, they are in fact, visible.
to make them make like a tree and get outta here McFly, click history, and choose "show in sidebar" you'll then see splayed before you, a neatly organized (and hopefully smut-free) history of every site you've visited.

to remove the offending entries, simply right-click and delete.you may have to be pretty thorough, depending on how much you're trying to get away with...although they should be organized by domain.

now, when we look at the drop-down of recent sites, it's clear as a whistle. close the side bar and you're set.
