I ran into a ugly little Drupal bug when I launched this site. I still don’t know the cause, but the solution is pretty easy to do.
After I launched I noticed a couple comments on the backend, but not the front. I tried looking all over the interface, and poured over my theme and even tried Drupal’s default Garland theme, but these comments never worked. I then looked directly in the MYSQL database and there they were, looking just fine.