The charrette workshop establishes a platform for a free flow of information and opinion sharing.
Its primary role is to provide a forum for building community consensus on a vision for the
neighborhood's future through active visualization to bring the vision to life. pdf 
The charrette is effective in managing a large audience, encouraging input and producing valuable political and market feedback. The dynamic and inclusive process is a fast method of identifying and overcoming obstacles. The shared experience helps vest interest in the design and build support for the vision. page
Each charrette is tailored to meet the needs of the project, including a schedule of meetings and presentations, and deployment of electronic communications such as a website and social media strategy.
(Find more details from Mehaffy)
See Chorus of Voices for distinct concerns forming fedderated wiki based information communities.