McDonald's partnered with Foursquare to offer incentives on "Foursquare Day" to increase foot traffic and sales. They advertised gift cards for those who checked in, resulting in over 700 additional check-ins that day and long-term followers on social media. While it boosted awareness, the campaign's impact was limited to a few days and not all who checked in may have made purchases. Using additional platforms like Facebook could have expanded its reach.