What Is Facebook Doing, Adding Checkins to Events?

According to some reports , Facebook is adding checkin buttons to events, if they’re timely and nearby to a user. According to AllFacebook.com , several users have reported seeing a little blue “checkin” button on the page for some events organized through the social network. It would seem to be an expansion to the company’s “Places” system, which Facebook initially promoted as a way to “immediately tell people about that favorite spot,” but which is essentially its own entry into the checkins game led by systems like Foursquare and others as a way to sell more precisely targeted adverts.

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What Is Facebook Doing, Adding Checkins to Events?