Location based discovery is the most exciting thing going on for marketers. However, I am going to watch Marc Cuban’s latest investment closely, because, unlike Foursquare, this startup will allow facial recognition via video, reversing the opt-in scenario and allowing businesses to automatically do checkins for their customers. This will essentially give storefronts the same analytic power as websites (if it works, and overcomes the privacy implications…).

Again, great post…