I'de like to see this feature:
Registered users will "own" their username, so not logged in persons cannot act if like they are "mike"cuz they did not register mike.
They can use unregistered names though.
don't let unregistered users post comments and the whole mess with guests posing as users should be over...
GauGau
Maybe it would be handy to give guests another color when they're posting, or a prefix/suffix.
Just change the query in db_input.php from:
$insert = db_query("INSERT INTO {$CONFIG['TABLE_COMMENTS']} (pid, msg_author, msg_body, msg_date, author_md5_id, author_id, msg_raw_ip, msg_hdr_ip) VALUES ('$pid', '$msg_author', '$msg_body', NOW(), '{$USER['ID']}', '0', '$raw_ip', '$hdr_ip')");
to
$insert = db_query("INSERT INTO {$CONFIG['TABLE_COMMENTS']} (pid, msg_author, msg_body, msg_date, author_md5_id, author_id, msg_raw_ip, msg_hdr_ip) VALUES ('$pid', '$msg_author (guest)', '$msg_body', NOW(), '{$USER['ID']}', '0', '$raw_ip', '$hdr_ip')");