Lolo Jones and the Jamaican Toe Drag

I thought I was halucinating, but it looked like Lolo was dragging her foot out of the blocks for 2-3 steps but the commentators kept saying it was a great start.  I had to replay it over and over, and sure enough, serious toe drag...  It's so dramatic, it looks like she is going to trip (to me).

I had to do some internet research, but sure enough - it's a technique that been recently developed for spinters to get even faster out of the blocks (Usain Bolt does it)...  Go figure, they STILL are making technique improvements in an area as old as humankind itself - running.