Alltop.com

Foursquare celebrated a major milestone this week: 100 million check-ins. The location-based networking company has enjoyed massive growth over the past twelve months, with nearly one million check-ins happening each day. The popularity of Foursquare and its competitors like Loopt and Gowalla make it a big opportunity for advertisers and search engines. Cheers to 100 million more, Foursquare!

Full story at OnlineSocialMedia .

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