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Flickr reaches 3 billion photos
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Youtube reaches 100 million videos
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Yammer is launched
It was launched at the TechCrunch50 conference. -
GetGlue is launched
Users "check-in" to the entertainment that they consume using a website, mobile website, or a device-specific application. -
Foursquare is launched
It is a location-based social networking website for mobile devices, such as smartphones. -
Quora is launched
It is a question-and-answer website created, edited and organized by its community of users. -
Chatroulette is launched
It is an online chat website that pairs strangers from around the world together for webcam-based conversations. -
Pinterest is launched
It is a pinboard-style social photo sharing website that allows users to create and manage theme-based image collections such as events, interests, hobbies, and more. -
Yammer reaches 3 million users
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GetGlue reaches 2 million users
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Instagram is launched
It is a free photo-sharing program and social network . -
LinkedIn reaches 115.8 million users
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Facebook reaches 800 million users
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Google + is launched and reaches 10 million users
It is a multilingual social networking and identity service owned and operated by Google Inc. -
Pottermore is launched
It is a website that serves as the permanent home for the Harry Potter book series. -
Foursquare reaches 10 million members
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Instagram reaches 13 million users
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Foursquare reaches 15 million members
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Twitter reaches 500 million users
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Facebook reaches 900 million users
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Instagram reaches 27 million users
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Pinterest reaches 12 million users
