10 million Live members use Twitter, Facebook, more

According to a Microsoft PR, over 10 million Xbox Live users have used Twitter, Facebook, last.fm, Zune Marketplace and Sky Player.

That's over half of the now confirmed 20 million users that populate Xbox Live.

All of the services mentioned were announced at E3 last year bar Sky Player, which got announced just before it.

They went live in the first week of November, except Sky Player, which went public just before it in the third week of October.

However, the service was pulled at launch after being crippled by demand. It's since gone back live.