Well, this is great.
Here's Microsoft's statement, from Kotaku:
Facebook and Twitter on Xbox LIVE will be free to Gold members, with a free trial period also available for Silver members. 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. 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.While this doesn't really affect most of us, it would have been great for Microsoft to advertise "free Twitter and Facebook integration!" - especially now that the PS3 and 360 are almost dead even in terms of price and features. I hate how Xbox Live is free, but to do almost anything with it you have to pay for gold. I love the service, and it's definitely worth it to me, but it seems like they short change some people. What do you think?