I'm super excited to start playing around with this. Although there is still friction in moving from one app to another, this API is a first step in weaving together what is now a disjoint mobile experience. Also, a great way to growth hack: I see app developers viewing URX as a toolkit to piggyback off other apps' audiences/views. Congrats to the whole URX team!
This is really awesome. Seems like the general public is starting to understand how important deep links are going to be as tool, and URX is building the toolbox.