Is about to land on the web - in fact, it already has in its test - YouTube Radio, a service eponymous portal that offers unlimited playlist in order to simulate a real radio channel based on the tastes of the users.
The layout of the operation is to YouTube Mix, but enriched with many features that allow you to automatically generate a list of music videos (with a roof but of 50) of a particular artist, extending the sharing with other users (thus creating web radio to widespread access). YouTube Radio will be able to comment on each proposed video or even reject it, in order to make the play more and more similar to the tastes of the user. (E.G. for NL)