"anonymous" user faked on a real user. use something like Justin's members plugin to create a custom role or wait until I'll add more code to help with many important permissions. I'm putting this together for a project I'm doing (or done when you're reading this) to be able to post anonymous using a custom child theme based on p2. something lik…

anonymous-wordpress.php

<?php

function auto_login() {
    if (!is_user_logged_in()) {
        //determine WordPress user account to impersonate
        $user_login = 'anonymous';

       //get user's ID
        $user = get_userdatabylogin($user_login);
        $user_id = $user->ID;

        //login
        wp_set_current_user($user_id, $user_login);
        wp_set_auth_cookie($user_id);
        do_action('wp_login', $user_login);
    }
}
add_action('init', 'auto_login');