I'm a member of many different forums and find this a very convenient and useful model ?
Every post is put up instantly, and can be responded to or discussed ?
And if you want to find out who's online, just click "users online", in the left hand corner under the "Welcome" your "log on name", It list everyone that is online.
Every style of forum requires a learning curve ! In my opinion this is the easiest to use, if you take the time to learn it !
And the number of members has very little to do with the forums platform. It has more to do with the type of administrators and membership that it has ! Many forums have large membership rosters, but very few members on line at any one time.
JMO Bill