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Instagram is the name of an online photo sharing social Web service that lets you share your life with friends through a series of pictures captured with a mobile device. Instagram also supports video uploads and lets users of the service instantly share photos on several social sites, including Flickr, Facebook, Tumblr and Twitter or specify a location with any photo to check in on Foursquare.

The Instagram service, which claims to have more than 100 million users, was founded by Kevin Systrom and Mike Krieger in October, 2010. In April, 2012, Facebook acquired Instagram for $300 million in cash and 23 million shares of stock -- a total purchase value of nearly $1 billion.

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