How many of us have written a brilliant comment or blog only to see it lost to the ether before it got posted?  Firefox has an extension called AutoSaveTextToCookie  that automatically saves and restores text typed in forms and text areas.

Go to netticat's page if you want to install the extension and have a test page for trying it. Or you can go to the usual addon page by Mozilla.

I checked the Do not use cookies, save text to local file  box,  which is available in options after installation. Warning:  this is a keylogger, so don't install if you're not comfortable with that idea.  I wish it didn't save the text after a successful submission, but it does so be aware of that also. However, in these times of server uncertainty here at TPM, it has saved my text and my patience three or four times already.