DBWorld Map is implemented as Javascript/Silverlight web application and uses a ASP.NET C# web service and a Microsoft SQL Server 2005 as a database backend. The processing of the DBWorld messages is fully automatic: the metadata from the DBWorld messages is parsed and then inserted into the database. For geocoding and displaying of the maps, Microsoft Virtual Earth is used.
Therefore, if the geographic information in a DBWorld posting is incorrect or ambiguous, entries with incorrect information might appear on the DBWorld Map.
The messages of DBWorld a processed once per hour. Thus, it might take a few hours until your message appears on DBWorld map (taking also some delay in mail delivery into account).
To avoid too many entries on the map, we create only one pin for each event, and not one for each posting on DBWorld. However, to find out whether two DBWorld postings refer to the same event, we use some heuristics which is based on the similarity of the event's name, location and URL.