Sprinkles is the world’s first cupcake bakery spread across 5 cities in US and growing rapidly. They also have a thriving fanbase on Facebook with 81,000 fans. They also use their page to ask customers what’s the next location they want and what they think of the new flavor. But the interesting bit is that each day on the site, Sprinkles announces a secret word, such as “ganache” or “bunny,” and the first 25 or 50 people to show up at any of its five stores around the country and whisper that word get a free cupcake. Apart from driving footfalls, the promotion also gets them a larger Facebook fanbase.