It is Twitter's 8th birthday. To celebrate, the site has put out a tool that lets you see any user's very first tweet. Some were naturals. Warren Buffett's first tweet, Warren is in the house, has been retweeted more than 40,000 times. Others might cringe at their first contribution. Steve Wozniak, co-founder of Apple, tweeted about his dance lessons: No pain, no gain. Awkward but fun this dancing, I still can't do macarena. That's what he wrote.
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