"Have you ever accidentally closed a Safari window with multiple tabs open when you really just wanted to close one of those tabs? Have you ever accidentally quit Safari—again, with a bunch o’ tabs open—by pressing Command+Q when you really meant to close the current tab by pressing Command+W?" "If you answered “yes” to either of those questions, you know the pain that comes with the sudden realization that you just lost one or more tabs chock full of Web surfing goodness. And if, like me, you regularly browse with five, ten, or even more tabs open, you know how futile it is to try to remember what each tab contained." Try Taboo 0.3, it's free. from Macworld Gems
Ok... this is definitely a must have for me hehe. Can't remember how many times I've closed the wrong window that had all my important tabs open. Thanks.
It's built-in in Firefox. Also when I have more than 10 tabs in Safari, sometimes I inadvertently hit the x itself instead of the tab. Firefox avoids this by having only one x on the right for closing the active tab. But it does seem Safari 2.0 is faster than the current Firefox. Another plus is you can now easily save complete web pages with 2.0