A Permission Pattern is a paradigm for how strict or loose you control who can contribute, what, where and how.

• Clean Permissions - Make it easy to understand
• One Wiki space per Group - similar to Business Units - Buckets ????
• Hierarchial Permissions - over complicates situation, makes it difficult for contributors to know where/when they can contribute
• Silo Permissions - frustrating for advanced contributors but safer for new contributors
• Business Units - Buckets - Silo'd organization but without fine-grained permissions within each business unit, and read-only access across silos
• Permission Granted - open by default, anyone can contribute anywhere
• IdentityMatters - when identity is anonymous, open permissions can be more problematic