The blog is using the WordPress plugin "WP Polls" and from what I can tell that poll is set to require a user to be logged in or something. Is this a mistake? If not, an admin should check out that the plugins settings are configured correctly. There's also version 2.63 out, and the one used on GT is 2.50...not sure if that has anything to do with it.
Anyways, if whoever runs this site needs any help with that (or any other) issues, I wouldn't mind lending a hand. I usually get paid to do fixes like these, but for all the hours of entertainment some of the downloads on here have given me I would love to help

P.S. also experienced in phpbb!