Earlier quoted context omitted.
I did something that caused Firefox to restart and lose _all_ of my active tabs. (Got them back via sessionstore.bak, thank goodness.)
"How many tabs do you keep open on your browser" would be an interesting question, to me, to see the results on. I'm often mystified by the stories of people who keep 50+ tabs open. I've never understood why, but I guess now that I'm considering it, I'm guessing such people must base their workflows around tabs.
I tend to have about 250-300 tabs open in total. Various things I mean to get back to, reference material for projects that I've paused working on, etc.
In general when it costs you nothing to keep a photocopy of a reference on your desk, the desktop becomes nothing but photocopies of reference materials.