In the public preview of the upcoming Xbox Live update that features access to Twitter, Facebook, and Last.fm, users under the age of 18 aren't allowed to access the aforementioned social networks. Unfortunately for those users, that will still be the case when the software launches on all Xbox 360s later this year.

According to Microsoft spokesperson Major Nelson in a blog post, Microsoft made the decision to limit access to Twitter, Facebook, and Last.fm to those 18 and older because parents won't have the ability "to use Family Settings to customize which of these applications their children can access." Microsoft is also concerned with keeping the Xbox Live environment "age-appropriate."

More: http://news.cnet.com/8301-13506_3-10392485-17.html