Google Maps used for train information service

DartMaps is a mashup with Google Maps that plots real-time data from Irish Rail and overlays it onto a Map of the area, with the use of some ancillary files. Nice job by the mashup artist and a good example of the type of stuff that Google's really looking for. Consider the revenue model of Google being able to place whatever they want on all of these Mashups. Good advertising space, but free service to the web server customers.