The CADBeyond Map uses the google map API with MySQL as db engine. Google map API provides very flexible web mapping technology, it can be worked with Autodesk Mapguide to provide extensive service. Later on I’ll try to build a geo-server and work with Google map, let's see how it will be.

Google.com continuously develop the amazing webapp; for a while I'm not sure that the adsense technology may probable jump a big step, it may tightly work with Google map to provide the geo-advertisement.

Relevant articles
Integrating MapGuide Applications with Google Earth
Demonstration of MapGuide Open Source and Google Maps Integration