When asking a question the title textbox allows 300 characters max. But If I try to post such a long question title I get an error after hitting the post button:
title too long; maximum length 150
Could you please sync that?!
Like animuson said, the input box is larger than the limit to allow for copy/paste and whatnot.
We've recently added ajax checking (on blur) of title lengths (among other errors) to give users quicker feedback on this sort of error.
Looks like this: