Today, geo data has become a conventional and pervasively familiar data type seen at once to underpin and significantly re-characterize the digital world, with broad implications for both technology and society. Geospatial data are abundant, but access to data varies with the nature of the data, the user groups wishes to acquire it and for what purpose, under what conditions, and at what price geodata can be obtained. The explosive growth of geographic information contributed by users through various application programming interfaces has made geographic information a powerful media for the general public, but perhaps more importantly, geospatial information have also become media for constructive dialogs and interactions about social issues, recent growth of Web-based Geographic information and volunteered geographic information (VGI).