Remember those happy days of Autumn 2011 when digital music services got the bug for Facebook’s Open Graph and ‘frictionless’ sharing? Better (really) late than never, personal radio service Pandora is joining the bandwagon. “On iPhone, Android, andpandora.com, you can now choose to automatically publish your Pandora music activity to Facebook which will populate your musical identity in Facebook’s newly launched music section,” announced CTO Tom Conrad yesterday. “While we’ve offered social features that allow you to explicitly share your Pandora stations and music discoveries to Facebook for some time, today’s update makes sharing effortless.” The integration also puts a Pandora Radio section in people’s Music sections of their Facebook profiles. We’re past the days of expecting Facebook to generate instant viral popularity for a digital music service, but fleshing out people’s Facebook Music profiles with their Pandora usage alongside on-demand services and Liked artists seems a sensible step forward.