Interesting and it works pretty well. Upload any shapefile to the Internet and then just paste the URL into the form and submit. There isn’t any description yet on how this is done or what you need to do to your shapefiles to get them ready to inclusion into Virtual Earth, but it is impressive non the less. Hover over the centroid to get a pop-up id of each record. The GIS community has pretty much ignored Virtual Earth since day one, but maybe this is the start of something new.
Update - Brian Flood post the following in the comments.
nice work, whoever they are ;)