I've installed a new comment system on Nuketown. It used to be you needed an account on Nuketown to post a comment; now anyone can. What stops the site from becoming a spam-infested hell is a module called Askimet, which checks the messages against a central spam catching server. It flags the incoming spam, and prevents it from being posted.
There's still an advantage to being a registered user -- you can post without having your comments moderated. Also, the site will automatically sign any of your posts for you. Anonymous users can post comments without an account, but I need to approve anything before it goes live.
I'd appreciate it if folks could post a few comments replying to this post so I can see how well works.