Sticky Candy in Singapore has launched a Fan Club for fans of their handmade rock candy. Their fan page already has over 100,000 fans. They were looking for a way to recognize fans at the point of sale to offer special discounts and benefits.
Sticky candy is very popular, so they hardly ever need to give discounts. Unlike thousands of other businesses in Singapore, they haven't needed to tie-up with a credit card company, and they haven't had to resort to profit destruction services like Groupon. The place is usually packed. Yet they now offer discounts exclusive to fans.
To join, customers simply click like and register their mobile number. Then they give their mobile number to the cashier when they pay.