In the last month 4,245 of the currently registered subscribers have accessed the forums, in the last 7 days 2,872, and in the last 24 hours 1,113. Illflems numbers on the active posters is accurate.
There are several reasons that user accounts aren't deleted when someone no longer subscribes - if they wish to resubscribe most want their old username/post count/etc back, secondly if we deleted their account then the signature line and all their user info (like their username) on all their posts would be lost as well. Last time I checked with Robin there were over 16,000 subscribers to the magazine and there are currently 9,660 users that are subscribed to the magazine that are also registered on the forums (we just ran the routine to turn off the members only features of people that are no longer subscribed about a month ago).
BTW, none of those numbers include the guests (which represents about 1/2 of the activity) or those that no longer subscribe.
The current user list is set to a 15 minute window right now. That is the default for vbulletin. You can't have it set for real time because that would be totally inaccurate, it would only show a user if they had JUST clicked on something. A 15 minute window allows for the time that someone could be reading a thread, etc. I know of other forums that have their user activity window set for 2 hours! When I set ours for 1 hour as a comparison one time we reached over 900 users.
-Steve St. Laurent
Webmaster