Tori Molnar, 14, is the founder of Utoria, a Pittsburgh, Pa.-based direct-selling company for teenage girls that she started in September 2010. Molnar spoke to Knowledge@Wharton High School about the critical role that social media plays in Utoria’s business development, including a 30-day IndieGoGo campaign that she launched in November 2011 to raise money to fund the company’s growth.…