When Firefox crashed while trying to open a .PDF (fellow blogger Ben's problem too), it gave me the option of restarting with all the previous tabs I had open. How useful!
Reading the Knowledge Base description, I learned I can "Always restore sessions on start". Also useful. Because currently, each time I start Firefox, I open (in purposeful sequence):
- A tab for streaming Internet radio (now playing: Digitally Imported / Chillout)
- school stuff (usually, *ugh*, Blackboard)
- a Google page for various searching
- whatever task I'm currently doing (1-, like, 20 tabs)