A ping list is when someone keeps a list of all the posters who are interested in a certain topic and "pings" them whenever there is a new article about that topic.
A "ping" would come to you the same way a reply to a post you make would, on your MY COMMENTS page.
It's like an alert for you to read something.
thanks Howlin. I would love to be on it. I want to see that jerk Moore flushed down the toilet!
YOU HAVE MAIL