From A VC:

Imagine you are building a mobile app that connects to the Facebook platform, the Twitter platform, the Foursquare platform, and the Google Maps platform. Assuming your users have all of those apps on their mobile, you can quickly and easily do the connections directly on the mobile device. And then you can pull data from those apps to create new experiences for the mobile users. You can create cross app notifications and other data driven experiences for users.

Way too many mobile applications require signing in too much. The phone itself transmits a unique ID. Once in, you should never be out. That’s huge.

Ah, the future’s looking so bright, we should be wearing shades.