Worth promoting from the comments: Bernhard Sterzbach reports that he has updated his network link for serving Google Maps tiles in Google Earth. It now works with the newer API.
If you have a Garmin Map, you can display it and interact with it on some of the fancier new phones with a mobile application called Vietnamese GPS (beta). I haven’t tried it, but somebody quite talented seems to be building a mobile mapping solution from scratch.
Dave Bouwman professes to a little sticker shock at what ESRI ArcGIS Server is rumored to cost, especially if all he wants to do is to serve some map tiles. Considering that Arc2Earth will soon do this at a fraction of the cost, might Brian Flood’s application suddenly become a lot more popular? How can I go long Arc2Earth?:-)