Camera Tracking... Is this dead or just moved?

I saw a post on Blender Nation about using the BGE with some scripts to actually do realtime camera tracking in game: http://www.blendernation.com/2008/04/23/camera-tracking-using-the-game-engine/

All the links in that post are dead though :\ Does anybody know of any backups of this or new location?

-David

I dont have the links but I believe the current movie project is in some way related to camera tracking (could be wrong though)