[TheQwerty]

Google actually had, what I thought was, a very interesting session about getting discovered in the Google Play store.

They're using 80+ signals to steer recommendations including the user's install history, location, and G+ network/reviews. I'd bet Apple is doing much of the same - they may even have had similar sessions at WWDC.

Video: http://www.youtube.com/watch?v=5Od2SuL2igA

Certainly worth a watch before agreeing with Marco that no one in the world cares about a user's experience on Android devices after they're sold.