That's a fine and good system, other than when you hit the wrong damned X and close the whole window instead of just a tab! Now I have to go back and skim 100 posts again to find the things I had wanted to read! (How about a nice little popup box? "You have multiple tabs open. Do you really wish to close the whole window?")
This damned mozilla browser needs a whole lot more work. I can't even count the number of damned bugs I'm finding in it. Everything from scrolling issues to window-order issues (and no, they're not related to my computer -- I see the same things at work).
Damned thing. You're damned if you use IE, damned if you don't.