Developing a Local User Group

I have run the Vectorworks user group in New Zealand for several years. For the past 3 years I've run the user group online, with a specific structure, known topics and an electronic manual each month. You can see an example of this on this web site. http://www.archoncad.co.nz/usergroup/join_nz.php

This site spells out my ideas for a user group, but when I talk to others, they say that a user group should have more interaction, that it shouldn't be so structured and it should be more about sharing information and tips and tricks.

I think it should be easier to start a user group, and I'm looking for way to make it easier. I think there should be user groups in every major city, with some of the big cities have 2 or more user groups.