Twitter's rise to global popularity has been pretty astonishing. It wasn't too lon
g ago that a tweet was little more than something we would wake up to on a summer's morning, but now it carries with it a whole new meaning thanks to Jack Dorsey who turned it into the world's biggest social networking and micro-blogging phenomenon, the users of which are now sending, on average, 50 million tweets a day.
However, growth in the microblogging service's number of users peaked at nearly 20 percent last April, but had dropped down to 0.15 percent in December 2009, according to a new study by Barracuda Networks.
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