It looks like there were a few things I rather missed while setting up this site. Apparently commenting of any sort was not working for several reasons--people could not sign up for accounts, comments through LiveJournal were being marked as spam and methodically deleted by the system, and it was just a mess all around.
I have fixed it so that you should be able to sign up for commenter accounts directly on the site now. LJ users should also be able to comment using their LiveJournal sign-in for authentication. Comments will post automatically without any interference from me. If you experience any problems with the system, please get a hold of me and let me know.