By contributing to this site! Once you become a member you can contribute to the forums, set up your own questions. You can even add to the blog and links and postings to the other pages on the site. I may have to do some policing but I hope to do as little as possible.
Secondly you can copy the contents of this site, any or all of it and set up your own webjam - and invite your friends to that one.
In this way I hope we can build a hive of waggledancers each contributing content and comments and encouraging others to join.