Google has launched its Google+ social network in a limited beta. The network aims to solve the problem of oversharing personal details with all your friends by allowing users to form "circles" -- more intimate groups of friends or colleagues. Users can share videos and articles through Sparks or group chat with Hangouts, two other features of the network. Facebook users may not want to re-create their entire friend network on Google+ but may find different uses for each network, experts say.
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