Your community members needs more then conversation to keep them bound together they need the shared context, refocusing, and connection to the greater web that static content provides. Using content in your community Interaction creates the core of community. If you host a community on cult films, for example, you might draw new members in by publishing a compendium of cult films, their actors, and directors. Orienting newcomers to the backstory and purpose of the community.
Every community has stories to tell creation myths, shared experiences, goals and beliefs.
Answering frequently-asked questions. These include tips on using the software as well as rules of conduct, and other tactit information. Broadening the base of discussions by bringing outside information and knowledge into the community, and providing a shared context for further discussions. It's easy to start repeating the same discussions, and particularly easy for members to become polarized around certain issues. You can help to span the divide by bringing in outside perspectives and opinions.