(Corrects Dimple Sahni's title in the third paragraph to show she is a former Omidyar Network investment manager. She now runs her own advisory firm.)
As co-founder of NY Tech Meetup, a group of 15,000-plus techies, investors, and entrepreneurs who gather every month in Manhattan for technology demonstrations, Dawn Barber has plenty of A-list contacts. Yet she hasn't invested in any of the people who've made presentations over the past six years. "I'm poor," says Barber, who supports herself through consulting gigs and other freelance work. "My [husband and I] are just not those people. If we were, I'd try to invest … in companies led by women."