Hey, Facebook guys, please review your notes from your HTTP programming 101 course.
When you go to compose a message to someone, the call that brings up the form
is a GET call. It doesn't change anything on the server. Firefox should be able
to cache the text I've typed in any fields when I run into problems with your captcha
service, and then I won't have to retype everything because you didn't provide a
Cancel button in the captcha box.
Lesson learned: when I want to send a message to someone, I'll poke them, give them
my email address, and hold a normal electronic conversation.