(computing) Initialism of Microsoft Network. / (computing, informal) Windows Live Messenger (formerly MSN Messenger), an instant messaging client from Microsoft.

(social commentary) The Noughties generation of Web-savvy youngsters who conduct a significant proportion of their socialising via Internet media such as instant messaging clients and social networking sites.

(literature, Shakespeare) initialism of A Midsummer Night's Dream.

A U.S. television news channel