“Re: Stupid Stupid Stupid”

I have had this happen multiple (I can't remember how many) times. And it sucks. I've stopped composing anything more than a simple two-sentence entry in the browser. The same thing will happen if I accidently hit the "Back" button in the browser (which on the Thinkpad is precariously close to the shift and arrow keys.)

I'm very interested in some way to minimize the damage from these incidents.