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1.
The language of Twitter. Comprised mostly of "@username", "DM" and "RT", it the art of combining these codes to form comprehensible statements in 140 characters or less.
I do not Tweet yet because I am learning Twitterspeak.
by lamps33 October 14, 2009
 
2.
Slanged speech made up by users of Twitter,mainly adaptions of words using "Tweet or Twit",shortened to cut down on character usage.
I use twitter speak to stay within my 140 characters.
by BLuTink78 June 29, 2009