I'm trying to keep up with all the new SE sites, but I was gently reminded this week on Gaming.stackexchange that I had a 0% accept rate. Oops.
I see that on your profile page it adds a warning message "Have you considered accepting an answer to this question?" after some period of time has passed, but I am betting that a lot of people don't look at their own profile pages all that frequently.
I suggest that you get the notification bar at the top of the screen whenever one of your questions hits the magic age where the notification already shows up next to the question on your profile page.