Google is slowly turning its Maps application into a wiki and that looks to be a very good thing. Sidewalk—and later Citysearch—only ever had enough staffing resources to scrape the surface of any particular city. Google Maps, on the other hand, has the entire online populace at the ready. While Citysearch in recent years has opened its site to community reviews, it has not given users control over all the data. That's where Google Maps is headed.