Based on the OpenStreetMap project data, MapDust helps identify bugs in the user-contributed data. Applications can build MapDust into their maps so that users can see areas that need fixing, or add new bugs to the system. The service is in private beta, but openly discussed in the OpenStreetMap community. In December 2010, MapQuest incorporated it into its open mapping sites.
MapQuest launched another site on top of OpenStreetMap, this time for the United States. With it, came an opportunity to have your directions written in "Santa Speak," something that is also available in MapQuest's Open Directions API, along with several other languages. The new site is MapQuest's largest built with data from the "free wiki world map" and consumes at least one API itself, for showing bugs in OpenStreetMap's database.