When a person who joins the site/MNFH. Volrac automatically PM to that person right away saying like "Hai User, welcome to the site/MNFH! (: - This is a PM where you can play in MNFH's games!" Example: http://prntscr.com/5e9ov4
OpenID is service that allows you to log-on to many different websites using a single indentity. Find out more about OpenID and how to get an OpenID enabled account.