Taking the Dad's Club group as an example of a successful group (it's the only one I know of) I think we can make a few quick bullet points of what it takes to become a successful group|
(I can't make bullet points)
1 It needs to target a special interest
2 It needs to benefit from having fewer more dedicated members
3 There needs to be a steady stream of newcomers
4 At the same time the early birds need to exit so as to avoid overcrowding
5 It has to deliver a clear value to its members
If you can read this you really need to fiddle with your forum settings.