Firefox’ session recovery feature comes in very handy at times. Imagine this: You need to restart Firefox, because you just changed some sound settings. One of the twenty web pages you have currently open is a very important one. Another common situation: You are in the middle of a research on ACM and you have difficulties managing all your 42 tabs with different academic papers and abstracts. Suddenly, your battery is almost empty and there is no place to plug in anywhere within walking distance. No need to bookmark. Just type pkill firefox and you’re all set. Isn’t this what you would call a real killer feature?
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My Firefox tends to crash quite often, seems to be conjuncted with flash. Hopefully this will get better one day when openflash reaches a more stable status but for now this tab-recovery is indeed very helpful.