Windows Live Messenger is trying to become more of a daily professional tool to keep up with your colleagues. Microsoft is attempting to position Messenger as a social networking client that will become more appealing to professionals. The software giant is introducing deep integration with LinkedIn, but unfortunately, only in the U.S. (This will change - hopefully.)
The integration will allow Messenger users to send status updates to LinkedIn and view colleague's updates - plus, Messenger and Hotmail contacts will be kept in sync across both platforms. Arguably the most important new feature of this integration is the unified contacts list, which allows you to easily send an email to one of your LinkedIn contacts from Hotmail, for instance.
Beyond LinkedIn, Microsoft announced other new features for Hotmail, including the ability to send much larger attachments by uploading content to SkyDrive, and the ability to track certain postal services. Again, though U.S. only. Bummer.