Via my buddy @halkeye is the news that Microsoft has confirmed that Messenger will be retired and users migrated to Skype on March 15:
Microsoft on Tuesday started mass emailing its 100 million+ Messenger users to let them know that the service is officially being retired on March 15, 2013. On that date, all users will be migrated to Skype, which Microsoft acquired back in May 2011 for $8.5 billion.
I really wonder how they’re going to handle non-microsoft clients, or if it’ll be more a microsoft-client-only transition?