This might be useful for those using work computers or just for covering your tracks to
www.lesbian-twins-double-ended-delight.com
It adds a button that when clicked, closes the tab and erases the history and cookies for all you forgetful pervs out there.
The download page is in one of those useless foreign languages that isnt necessary anymore
https://addons.mozilla.org/fr/firefox/addon/8686
Someone with sense has put an explanation in a proper language here
mozdev.org - closenforget: index