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Hotmail is a free web-based email service operated by Microsoft as part of Windows Live.
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Blackboard is founded as an online course management system for educators and learners.
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Wikipedia, the online encyclopedia and world's largest wiki, was started.
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MySpace is a social networking service owned by Specific Media LLC and pop star Justin Timberlake. Myspace was launched in August 2003
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Flickr image hosting website opened.
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Facebook, another social networking website, was started for students at Harvard College. It was referred to at the time as a college version of Friendster.
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YouTube began storing and retrieving videos.
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Twitter is an online social networking service that enables its users to send and read text-based messages of up to 140 characters, known as "tweets".
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Tumblr is a microblogging platform and social networking website, owned and operated by Tumblr, Inc. Tumblr was launched on April 27, 2007 by David Karp.
