A legitimate exit poll yes, not one skewed to one class of voter (forum participants) and certainly not one that publishes results while the real polls are open. Perhaps in the future, this kind of poll could run as a service sponsored by a third party and the results view could be delayed until after real voting is over with.

No matter what the intent, published results of an exit poll will effect votes not yet cast.

I have plenty more to say but I will not say it until AFTER the polls close and in another thread...

Someone had a signature awhile ago about the states of a cat in a box that now somehow seems appropriate.