Statistically, there are approximately 9 "lurkers" for every active poster on a message board. Some have registered IDs and some don't even do that. They just read and maybe don't want to register as it sometimes leads to being put on email lists and receiving a bunch of spam. I have been contacted via private inbox here by some who have never posted requesting a copy of the AGM recording, so I know for a fact that not all readers ever post.