Foursquare reached out to their users by making April 16 4sqDay. In this day, companies are encouraged to offer extra promotions to people who visit their businesses. Foursquare gets to thank their users and companies get extra Foursquare customers who are looking to cash in on extra deals. It’s a textbook example of using social media marketing to bridge the online and offline worlds. In this Future of Engagement episode, host Murray Newlands analyzes 4sqDay from a social networking perspective and has a few tips for brands looking to promote themselves on social networks.