If you’ve ever used Virtual Scene Graphs or Pyramid Tile schemes for topographic and terrain data visualization, then you might wanna check out the “GIS in XML” blog. He’s gathered massive amounts of information on the schemes used in Google Earth & Amazon’s services, and has some fantastic resources on designing XML for interactive visualization of terrain data with these services.
Randall Hand
Randall Hand is a computer graphics programmer and news junky that's been working in the field for the last 15 years. He's responsible for visualizations generated on some of the most powerful supercomputers in the world, ytnef, mullion support in ParaView, and VizWorld.com.