What Is GeniusGenius is a fantastic new way to discover music with iTunes. Genius makes playlists and mixes from songs in your library that go great together — with just one click. Genius also includes Genius sidebar and recommendations
Sending Information About Your iTunes Library to AppleGenius is able to make playlists and mixes and give you great recommendations by periodically sending information about your iTunes library to Apple. This information will only be sent to Apple if you choose to turn on Genius.
The information sent to Apple includes details about the media in your iTunes library such as track names, play counts, and ratings. This information will be stored with an anonymous Genius ID and not linked to your Apple ID. When using the iTunes Store or Genius sidebar, Apple will also use your purchase history to give you better recommendations.
The information about your library will be anonymously combined with information provided by other Genius users. Apple will use this combined knowledge to improve Genius results for everyone.
If you would like to use Genius for more than one library, you must turn on Genius from each. To turn off Genius, select Turn Off Genius from the Store menu. Once you turn off Genius, iTunes will no longer send information about your iTunes library to Apple. If you used Genius for more than one library, you must turn off Genius from each library. *Genius Mixes require iTunes 9 or later.