d238a290_n__Communities___Collaboration__Sociability_Concerns
[User Questions] 5. Can I do want I want easily? [Usability Concerns] What capabilities will best meet communications needs (e.g. different formats for information, such as Web pages , FAQs, content variation; search facilities, effective help at the appropriate level; private communication, etc.)? [Sociability Concerns] 
What is the best way to ensure that the community is a congenial place, one where people can do what they want to do? What are the communication needs of the community?
CoP Usability and Sociability Heuristics | Curation, Communities & Collaboration
Sociability Concerns