Mozilla Firefox - Tabbed Browsing

Mozilla Firefox - Tabbed Browsing described for the ordinary Joe. Now, for those of you still using IE and it not having tabs, this is a *critical* feature. It is what keeps my sanity. Imagine a world where you don't have to keep 10 IE windows open of the various websites that you are looking at. No also imagine that the names on the tabs are informative and you don't have to search for the page you were looking at three pages back. Now that is sweet. Oh and there is (or will be soon) a undo close tab feature. I can't tell you how many times I've cursed the luck that I just closed the one coolest page and in firefox, I can get it back.