Want a great blog on Lawyerist's network of blogs? Get a great one for just $99/month from Lawyerist Sites.
If, like me, you do any serious amount of writing in text boxes online (including webmail, blog commenting, etc.), Textarea Backup is a pretty useful Greasemonkey script for Firefox. It backs up your text area every ten keystrokes, ten seconds, and whenever the text area loses focus. You’ll need Greasemonkey to run it, and then you can install the Textarea Backup script.