Facebook chat in Messenger
Many of you have been asking for Facebook chat, and it’s finally here. More than half of all Messenger customers also use Facebook. With the previous beta, you got a rich social view that brought together all your updates (including those from Facebook) and gave you one place to see and comment on them. With the new Facebook chat integration, you now also have one place to chat with all your friends. And if you use Facebook but don’t use Messenger today, you now have an always-on “people app” on your PC that gives you instant access and notifications as people come online in Facebook or Messenger.
From a technical perspective, this is a significant task. We’re connecting Messenger’s ~300 million customers (who are already connected to Yahoo! Messenger and Office Communicator) to Facebook’s ~500 million customers