Besides launching new Zune models, Microsoft has also given its Zune Marketplace music store some new features, and introduced a new online community called Zune Social. The latter is really interesting. It lets people create a 'Zune Card' that automatically updates to track what they're listening to on their Zune - recently played tracks and all-time favourites. The schtick is that other Zune owners can then listen to their friends' Zune Cards and buy the tracks.