msn what ah? How to use ah?

Users questions: Only know that it is used in communications, may be chatting, right? Thank you
Experts answer:MSN (MicrosoftserviceNetwork), is by Microsoft in August 24, 1995 Internet service providers set up, and together with Windows95 Release. MSN was originally a similar CompuServe and AOL's paid services, to provide dial-up Internet access and value-added information, chat rooms and other services, but also allow other existing Internet users through the Internet to use. Later, the popularization of the Internet, so Microsoft will most The original charge of the project to be transformed into a free MSN portal, MSN, this is the second phase of life. Microsoft bought Hotmail, the constantly re-integration of its services, especially in its. NETPassport authentication technology matures, MSN expanded Hot mail, MSNMessenger and MSNSpaces service, which is a blog service. MSN portal, also recently landed in China, and content providers with Beiqing Bao and other content services jointly. MSN is the world's second-largest Internet service provider, with a 9 Millions of users, second only to AOL.
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