Chapter 4—VIP Memberships

• The new rules of building customer loyalty http://www.inc.com/guides/201105/new-rules-of-building-customer-loyalty.html

• The difference between a bonus and free http://sethgodin.typepad.com/seths_blog/2010/01/the-difference-between-a-bonus-and-free.html

• How to combine foursquare and your loyalty program http://www.inc.com/guides/201107/how-to-combine-foursquare-and-your-loyalty-program.html

• When will educators get serious about gaming? http://blogs.hbr.org/innovations-in-education/2011/03/when-will-educators-get-seriou.html

• How to start a customer rewards program http://www.inc.com/guides/2010/08/how-to-start-a-customer-rewards-program.html

• Serious play—The business of social currency http://blogs.hbr.org/cs/2011/04/serious_play_the_business_of_s.html