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Loopt, based in Silicon-Valley and backed by leading venture capital firms Sequoia Capital and New Enterprise Associates, has created an interoperable social-mapping service that allows individuals to use their location to discover the real world around them, enabling them to find and enjoy the people, places, and events that mean the most right here and now using their mobile phones. With Loopt, individuals will always know who’s around, what to do, or where to go

Plurchase is an online social shopping site. From it, you can visit online shopping sites like Zappos with the additional of a social toolbar on the right hand side of the page. You can chat with other friends online and see what they are looking at on other shopping sites as well.