As of this morning I have a new favourite Firefox feature:
History > Recently closed tabs
As the name suggests it lists any tabs that have been closed in the last wee while. It’s like an undo button for when you accidentally close the wrong tab.
Simple, but brilliant!
(extra: there is even an extension available which allows you to add this function directly to the toolbar)
I don’t know what I would do without Session Manager:
https://addons.mozilla.org/en-US/firefox/addon/2324
It saves your firefox session between unscheduled reboots, which happens a lot on the flakey laptop I’ve got :)
Kirk