that's when the frog founders found that rock 'n' roll performers were particularly interested in the allergy-free fog formula. craig is a lead singer for the hearts of saints is especially sensitive to the smells and irritants by typical fog making machines. >> they have a stench. as a vocalist i don't like things to stick and clog my vocal cords. >> they came a long way from the early days and the prospects seem great. >> we grow by a couple hundred percent each year or more. >> it's time to answer your business questions. andrew and jen are back with us. it's about whether or not to apply for a patent. >> there is one vexing issue. d like your mobile app and is if even worth patenting it? is it worth the time and money to patent a mobile app? >> okay, i'm starting with the investor and ending with the lawyer on this. is it worth getting a patent? >> well, you know, i would say for mobile app, the answer is no. you should put all of your money, all of your energy into growing the business, getting users, getting traction, you know. lawyers are like gravity, water under gravity, they'll tell you maybe you should, t