Some people keep group lists of FReeper they know have an interest in a particular subject. When the list-keeper notices an article for which the list applies, they post a short PING message to alert everyone on the list that something interesting has been posted. When you post “ping” on a thread, you’re asking to be added to the list.
Also, putting a FReeper's screen name in reply to so that they will see it in self search.
It's also a golf equipment company.
Try this
http://www.freerepublic.com/focus/f-news/673536/posts