empty -or- Modified Tweet -or- Mean on Twitter

As Modified Tweet, MT means the tweet you're looking at is a paraphrase of a tweet originally written by someone else.

Online jargon, also known as text message shorthand, used in texting, online chat, instant messaging, email, blogs, and newsgroup postings, these types of abbreviations are also referred to as chat acronyms.  

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See also : HIOOC  twitterverse  
NetLingo Classification: Acronyms and Text Message

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