In a further sign that Facebook is in direct competition with Google to become the default home page of the web, founder and chairman Mark Zuckerberg has announced new features that allow users to display and share music streams that they own or share.

The development allows already established music sharing services, such as Spotify, to integrate their functionality into Facebook profiles by developing 'apps'. Crucially, for the promotion of music, people will be able to observe what their friends and colleagues are listening to at any time--allowing people the ability to browse through their friend's virtual 'CD collection'