Personally, I think Anonymous Monk has a role here as much as anyone. As mentioned there are many good reasons seasoned Perl mavens might post anonymously, as well as registered users, and those that haven't or may not register.

Even with the ability to post anonymously, there continue to be a huge number of registrants daily. I don't know how many registered monks there are, but the number must be quite high by now. <anyone know?>

There are online communities that require registration prior to posting, but PM has succeeded famously with its friendly and come-as-you-are attitude. Might be a shame to rock that boat.