Today at Facebook headquarters in Palo Alto, CA, the company held an event to show off their new Places product — essentially their check-in service. We spotted in the wild a bit early , but that was only on the touch.facebook.com site (the site built specifically for touchscreen devices). Later tonight, it will be a central part of the new Facebook iPhone app as well.

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Facebook Places Coming To The iPhone App Tonight. Check-Ins With Friend Tagging