Turntable is fun with friends. But being a listener in a DJd room is no different than listening to a curated playlist, a curated radio station, and probably worse than personalized algorithmic radio in terms of efficacy of discovery.
You'll discover music on Turntable, but for the same amount of time spent on an algorithmic radio station you'll probably discover more.
You might "discover" more in the sense that you'll get far more recommendations of songs you've never heard of, but those recommendations might not be relevant to you. Why? Because your mood changes from song to song and algorithms will never capture human emotion quite like, well, humans.
When I'm in a well-DJ'ed Turntable room, the "radio" feels so much more natural. Songs flow. People are constantly editing their queues to best the song before it and I find myself rarely having to vote on a song. Its already better than Pandora, IMO. It also beats BMAT which has amazing algorithmic recommendations (based on waveform analysis and musical feature decomposition).
The only issue I see right now is that if your tastes are outside of Electronica and Indie, theres not much else for you at the moment.
You'll discover music on Turntable, but for the same amount of time spent on an algorithmic radio station you'll probably discover more.