I extend an apology to any visitors who earlier this evening would have found my site in a state of utter chaos. I decided that my old Drupal site "was having issues," to put it vaguely, and concluded that rebuilding from the ground up would prove my sole option at that point. I think that it turned out quite well, to be honest, although I'm still using just the default theme at this point. I think that I'll stick with that, frankly, mainly because Drupal 7 is just around the corner and I don't feel that it would be productive to search through a list of themes now and then have to do so again, later.