I just installed this Firefox extension, and haven’t even used it yet, but I already know it’s the best thing ever: Scribe saves the contents of all form fields on a page when you hit ctrl-S.
For instance… blog entries.
Even if you don’t have a blog, you probably know the crippling disappointment of typing out a long message in webmail and then somehow… accidentally… closing… the window.
Nevermind, this doesn’t work like I thought it would. That should teach me to post pre-emptive recommendations. Ha!