This is a pretty sleek firefox extension. Basically it allows you to view all your tabs at once.
This is pretty handy for people like me who use FF for homework, research, and comparing. I have on average about 15-20 tabs open at once when doing those things and believe me it can get hard to know which one is exactly which. Even though they are labled you might have multiple ones open for a single site.
I noticed that IE7 does this as well.
Basically it makes a new tab in which all tabs are on a single screen and you can click on them to go to the one you want.
Example
Link
https://addons.mozilla.org/extensions/morei...firefox&id=1457
My FF theme is luna
https://addons.mozilla.org/themes/moreinfo....ication=firefox
My tabs are colored because of this
https://addons.mozilla.org/extensions/morei...ication=firefox