I think this may be very handy, especially as some errors (human) are made when creating the thread title.

I second the motion: though perhaps the edit time-out (the time you can edit a thread) for a forum title should expire as soon as there is a second post? So that the ground isn't pulled out from underneath the new poster. for example:
Thread:
Do you hate celery?
Ist post Please answer Y/N
2nd post: Y
Edit thread title to "Do you love celery?"

PS This celery thing is getting out of hand...