"Mastermind," CEO roundtables, and peer advisory groups bring small business owners together to problem-solve and brainstorm their day-to-day challenges and opportunities under the guidance of a facilitator. Vistage, a peer advisory group, found that people who participate in these groups outperformed those who didn't, demonstrating a 12 percent increase in annual revenue during the economic downturn years of 2007-2012, compared with a 5percent increase for businesses in general.