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Wikipedia, a free website that anyone can edit, launches.
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Google begins a new part of google, Gmail.
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Facebook, a social networking service which began in Harvard, was expanded to other universities.
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Facebook reaches 1 million members.
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Facebook becomes available for high schools in the United States.
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Facebook becomes available in the UK, Ireland, Canada, Australia, and New Zealand.
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Twitter a website for mini-blogging and social networking, begins.
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Google acquires Youtube.
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Apple releases the iPhone in the United States. iPhone users can access social media sites and apps through their phone.
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The app store opens via iTunes.
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When Michael Jackson died, Twitter servers crash after users send 100,000 tweets per hour.
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Lady Gaga becomes the first living person to have 10 million friends on Facebook. She is second overall only to Michael Jackson who has 14 million friends.
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