BCC is Bingo Card Creator (http://www.bingocardcreator.com/). It's patio11's business, a tool for schoolteachers to easily create bingo cards for their classes. It's not sexy, but it's enabled Patrick to quit his job as a salaryman and work exclusively on his own projects. He's more concerned with profitability than with his (or his businesses') image, and here, he's saying that a big / complicated app isn't necessary for a business to be successful.