You don't get notified per se that you have forgotten to give a tick and I wouldn't consider such passive-aggressive functionality good, there used to be Accept Rate with sort-of similar effect, but it has been removed in early 2013.
However, the question appears in the list of question without the green box around the number: https://tex.stackexchange.com/users/23871/dohn-joe?tab=questions This grabs my attention when I visit my profile, and I sort it out instantly. As well, it is not rude if the person who answered your question asks you to mark it as accepted, therefore they can do so to receive the deserved 15 rep points.
(And as Werner pointed out, these questions don't appear in the unanswered list.)
:-)