Full Xbox 360 Facebook and Twitter access is for Xbox Live Gold Members only, with non-paying Silver members receiving a "free trial period" for the functionality, Microsoft has confirmed.
"Facebook and Twitter on Xbox LIVE will be free to Gold members, with a free trial period also available for Silver members," it said in a statement given to CVG.
"Facebook and Twitter on Xbox Live will offer a truly one-of-a-kind social experience, completely optimized for the TV and seamlessly integrated onto your console.
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"Add to that exclusive access to Last.fm, Netflix instant streaming, demos, trailers and discounts, plus the best multiplayer gaming network on the planet, and we're confident Xbox LIVE Gold memberships is hands-down the best value in home entertainment.
"We're committed to adding new features and value for our Gold members, and will continue to do so."
We're glad that's cleared up. See the Facebook/Twitter 360 integration in action above.