"It’s one of the most common checkins on Foursquare: you head off to a movie theater, check in, and type in ‘Harry Potter’ to tell people what you’re seeing. Or check in to a stadium and shout ‘Patriots game’ or ‘Lady Gaga concert,'" the company wrote in a blog post. "In moments like this, a place is often more than just a place; so today, we’re starting to pull major events into our database." Un