Google has helped solved a problem that infects new social networks and applications--how to grow them, and fast.
Google on Friday released the Google Social Graph API, which will allows developers to write apps that can easily link up people on the Web. The API takes the publicly declared relationships about your accounts, on Twitter, MySpace.com, and so on, and then your friends and their accounts, and makes that information publicly accessible for new apps. So, when you join a new network built using the API, you won't have rebuild your social-network contact list.
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