Where: ExactTarget, Indianapolis
Why: In December 2007, ExactTarget announced its intent to go public. Fast-forward to May 2009: The company remains private as it received $70 million of venture capital funding even in the midst of a recession. Dorsey, who has been instrumental in growing the company 50% year-over-year has a lot to do with it. ExactTarget does more than just e-mail marketing. Today, customers can do triggered and transactional e-mailing. In addition, the ESP has added such features as SMS and voice messaging, integration with CRM systems and social media interaction.