There is one bold, grand, idea hidden in online community jargon. This grand idea is simple:
Your customers/clients/supporters/fans/followers should be talking to each other.
Talking leads to relationships. Relationships to loyalty. Loyalty to profits. Everything else is a sugary topping (if not a big distraction).
Every discussion you have with your client must sell the idea that their audience should communicate with each other. Every tactic and strategy must be based upon encouraging, helping, improving or removing the obstacles that prevent your audience from talking to each other.
Strip away the distractions until you have a lean plan that focuses on getting your audience to talk to each other.