26,000 developers sign up for PC motion-controlling gadget Leap | VentureBeat
About 1/2 all the people backing Ouya on kickstarter, that seems significant,
How many developers have signed up for the Kinect?
Not that many. 350 companies: http://www.businessweek.com/articles/2012-03-08/can-kinect-make-windows-cool-again