RadiumOne’s founder, Chairman and CEO Gurbaksh “G” Chahal, appears to be the perfect tech entrepreneur. His first startup sold for $40 million to ValueClick. His next startup, BlueLithium, was acquired by Yahoo for $300 million in cash. Oprah once gushed that the good-looking entrepreneur was single. Now, his ad-tech company is reportedly planning to raise $100 million in an initial public offering.