Last.fm announced that it quickly gained one million users from its recent Xbox integration. Now owned by CBS, Last.fm agreed to sync itself into Xbox Live alongside Facebook and Twitter last week.
The increase in user base (covering the US and UK) is the largest incremental gain ever for the service and new users have already listened to 120 million minutes of music.
Also, Microsoft reported more than two million Facebook logins through Xbox Live in the last week alone along with Xbox-generated Twitter traffic.  The Xbox integration now also includes Zune (the Microsoft download store).
The gaming computer is another network access tool.