Indeed digital maps and satellite sources have been around only since 2004 and new market entrants such as Google, Microsoft or other large companies could well knock at the door soon.

Local governments are faced with the possibility of keeping some information behind the firewall of public-facing mapping websites in the name of critical infrastructure protection. What features should be hidden in the name of suppressing information from would-be terrorists? Is it an all or nothing decision and where do you draw the line? Editors Joe Francica and Adena Schutzberg explore the topic and why some information can be obtained regardless of whether it is exposed by Web-based mapping portals. The podcast was recorded on October 8, 2007 and is 12:20.