Shazam has added social networking and sharing features to its popular music discovery application for the iPhone and iPod touch. Shazam allows iOS device users to identify and tag songs simply by listening to a few seconds through the device’s built-in mic. A list of tagged songs is saved within the app with links to the iTunes Store, track and album reviews, artist biographies and discographies and song lyrics. Shazam 4.0 adds a new Shazam…
