I agree that using Submit for the prewie function is less than obvious in its intention.

It might just possibly be better to have two buttons: one for preview and one for Submit (or post).

Also I've just noticed a tick box on the right of
Make a link("blue clicky"). Does that possibly apply to the Automatic Linebreaks legend on the next line? It's not in the right place if so - or has my browser screwed up?

Anahata