As Twitter.com reports, number of Tweets increased from 25% (2009) to 40% in 2010. According to Twitter CEO D.Costolo, such an increase is caused by improvements made for BlackBerry, Android and iOS systems.
Airlines, Air France, KLM, and Ryanair no longer offer customer service support using Twitter's direct message functionality.
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Elon Musk has recently declared that Twitter is going to roll out the latest changes to its user interface in order to give a better experience to users.