Twitter, 140 character message service is now officially 3 years old. Twitter inventor Jack Dorsey Twittered yesterday. Twitter took off from simple to tweet success within less time.

This social networking and micro-blogging service that enables its users to send and read other users’ updates known as tweets.

What are you doing?

"What are you doing?" is the question Twitter asks "Twitterers" to answer in a simple text message as they connect with friends, co-workers or the wider world. Twitters have to answer within 140 characters. so, what are you doing?

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