The meaning of the Acronym MSN is...

MSN is

• Major Shaft Network
• More Suckers Needed
• Me Speak Nogoodengrish
• My Sexy Nose
• My Superior Network
• Make Some Noise
• Money Sold Now
• Many Singing Norwegians
• Must Scream Nonsense
• Mentally Sub-Normal
• More Sociopaths Needed
• Many Single Nerds
• My Silly Network

More Meanings For MSN:

• Microsoft Network document
• Medicare Summary Notice
• Most Significant Nibble
• Multi Subscriber Numbering
• Mega Software Net
• Multiple Subscriber Number
• Multiple Subscriber Numbering
• Mobile Subscriber Number
• My Screen Name
• Media Serial Number
• Minority Scientist Network
• Major Shaft Network
• More Suckers Needed
• Me Speak Nogoodengrish
• My Sexy Nose

MSN is also in:

• Chat
• File Extensions
• Funnies
• General
• Hardware
• Networking
• Telecom
• Universities