The Dynamics of Online Communities
Breaks online communities into seven topic

• Trust


• Reciprocity


• Purpose


• Roles


• Control
• 
  Getting past "knowledge is power" to "Shared knowledge is shared power"


• Communications (techniques and styles)


• Learning dynamics
• 
  Getting overwhelmed
• 
  Separating wheat from chaff

Good write-up for online communities and how to develop them. For instance it lists how to find ways to develop trust among users. A couple of ways that are listed are actually having online conversation to test the other users knowledge, or having them post really extensive resumes. Another great suggestion is giving users certain defined(by a timeline) task to see how they operate.