Twitter Music is coming... but what makes it stand out?

Pandora decides to limit those using its free mobile service to 40 hours a month. And needless to say there's a bit more to it than just royalties.

A couple of weeks ago I was having dinner with a couple of music industry friends -- one who manages a few quite popular bands and another who founded a startup that streams concerts on the web -- and at some point the conversation turned to music streaming services like Spotify, MOG, Rhapsody, Rdio, Pandora, etc.

Well here's a little gift for you going into the weekend: MOG -- the streaming music service with a library of over 11 million songs that sites like Techcrunch have been drooling over for some time -- just went live with a completely free, ad-supported version of the service.