Playing video games has paid off handsomely for 21-year-old Trevor Martin of Champaign.
Martin parlayed his expertise from playing "Call of Duty" games into a career as a video game commentator on YouTube.
In the process, he's built a following of nearly 2 million YouTube subscribers and taken in streams of revenue from corporate advertisers.
Revenue from his business varies month to month — from as little as $10,000 to as much as $70,000, he said. Total revenue for 2013 is expected to be in the $300,000 range, he said.