The easy way to solve this problem would be to add a sub-title field on the submission page. For many submission it could be left blank, but for the ones where

The easy way to solve this problem would be to add a sub-title field on the submission page. For many submission it could be left blank, but for the ones where the submitter wants to draw attention to something special or non-obvious, like a bug in the submitted page, he could fill out the sub-title.