Costa Coffee and Starbucks in a battle for Facebook check-ins during the Olympic Games. Check out the results in our caffeine-packed infographic! Starbucks and Costa Coffee are long-term competitors on the coffee market so we decided to challenge them in a Facebook check-in knockdown. To spice up the competition, we compared the number of check-ins made during the Olympic Games (July 27th – August 12th) with the same period a month before. The “participants” were located in Central London and to be fair, Starbucks had a head start with an 8 times higher number of stores (248 compared to the 30 Costa Coffees).