Turntable.fm is an excellent shared-room music-listening experience. Experiencing it for the first time last summer, I’m still surprised to see that it still feels like their minimum viable product, and not much has changed — possibly integrating some features to appease to their more regular audiences. iPhone app is an addition, and is integrated well. I see room to expand in some particular features more. Particularly, the more consistent communities have hacked in their own ways of having accessible community room rules (often a Google Doc), DJ queues, bots, and more — some of which require a coding background. In my opinion, not having these features built-in adds a segregation of sorts between the heavy users and casual users, or the larger more well-established communities and smaller ones trying to get a lift.
Takeaway: Keep an eye out for how users are hacking an application’s normal services to serve needs not found elsewhere or explicitly announced. Good sign of a potential additional feature that an application can do better in a more integrated way.