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  Ray Tomlinson sent the world's first email, a message passed from one computer to another placed directly beside it.
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  the first ARPANET message was sent from a computer at UCLA to one located at Stanford University—well, part of a message, anyway.
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  Now, around 89 billion spam emails are sent daily.
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  ARPANET computers had been using NCP (Network Control Protocol) to communicate with each other.
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  Six Degrees is widely considered to be the first social media platform.
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  You all have an email icon on your keyboard, right?
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  Wikipedia, one of the most widely used online encyclopedias
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  Twitter co-founder Jack Dorsey made the first tweet on March 21, 2006, when the site was still known as Twttr