Above: By the City/For the City maps citizen users | screen grab from http://www.urbandesignweek.org/by-the-city/main. Below: A similar interface locating users on Change by Us | screen grab from http://nyc.changeby.us/#start.

Above: By the City/For the City maps citizen users | screen grab from http://www.urbandesignweek.org/by-the-city/main. Below: A similar interface locating users on Change by Us | screen grab from http://nyc.changeby.us/#start.

Above: By the City/For the City maps citizen users | screen grab from http://www.urbandesignweek.org/by-the-city/main.
Below: A similar interface locating users on Change by Us | screen grab from http://nyc.changeby.us/#start.