Marketing is key, whether you're a multibillion dollar company, or just a guy with a cart full of creme brulee. But just doing it isn't enough: you have to market effectively. Curtis Kimball, the man behind the Creme Brulee Cart, put Twitter to work for him amassing thousands of followers and growing his business by allowing people to follow the cart through the online service. Kimball engages with customers and develops a personal relationship with followers online, asking for suggestions on flavors and cart locations. Perhaps the most impressive part of this story is the fact that Kimball has no marketing budget (Twitter is a free service), yet enjoys an incredibly popular status and high ratings on Yelp.