Ran across this on the 8Shapes site. Brilliant. Love the technique and webcam tool. 

http://www.eightshapes.com/blog/2011/08/19/sharing-sketches-remotely/ 

Pretty great methods here, would love to grab one of these IPEVO cams ($70). 

We struggled with a webcam and tripod to do remote mobile demos, and this would do the trick ideally. Along with the added benefit of easy capturing a whiteboard or tabletop sketches.