WeWrite could be useful in many different spheres of life …
Professional
Companies as a company wiki
Journalists as a tool for both research and publishing
Teachers as a tool for building and publishing curricula
Academics as a tool for doing research
Developers as a documentation wiki
Personal
Families as a collection of stories
Friend groups … stories
Classmates . stories
Spouses as a collection of secrets
Civic / societal / political
Movements as a place to organize and develop new ideas
Neighborhoods as a tool to organize and strategize on the map
Each of these will need to be marketed to adequately
Given the privacy features of WeWrite, we won't know how people are using it unless their pages are public.