Now Playing: 08-15-12 Marketplace

Young undocumented immigrants can now legally work in the United States if they apply for the work permit program that began today -- but is the permit worth the $500? Facebook insiders can start selling their shares tomorrow. Mobile payment systems are making purchasing more convenient, but there may be a hidden price. China's economy is growing, but Chinese investors are putting their money elsewhere. Young entrepreneurs are redefining the 'family business.' Kai Ryssdal talks to Walter Latham, the producer of "The Original Kings of Comedy," about his new venture with YouTube. And we learn about why Priceline resurrected William Shatner's "Priceline Negotiator" character.