Your kidding right? That feature owns! You can easily close a tab without having to open it or right click on it, perfect for when there is something naughty up and somebody walks in the room. Also the spelling correction in firefox 2 owns. I used to use opera, and yeah, it used a little less resources, but I hated the way the bookmark bar worked and that side pane that opened up if you click the side of the screen. I want back to firefox and never looked back. And 2.0 uses less resources than 1.5.