Microsoft and Facebook just launched Docs.com, a document creation and sharing website that integrates with Microsoft Office and Facebook.
You log into Docs using your Facebook account. Once there, you can view shared documents. The service is currently in a fairly early beta stage, meaning you'll have to sign up for their waiting list before you can upload or create your own documents with the service. Because of that, there's not much to the service now, but it's clearly a push toward competing with Google Docs.
Think you'd ever do your online word processing with a Facebook/Microsoft combination? Share your thoughts in the comments.