Freemium" mobile broadband outfit FreedomPop has pulled back the curtain on how it plans to make money while giving away 4G internet. In an interview with GigaOm, Marketing VP Tony Miller revealed that once it has got enough consumers hooked on the gratis data, his company will start selling premium features, potentially including a VoIP solution for the network, now supplied by Clearwire after the collapse of LightSquared. The company will also charge a penny for every megabyte used over the free monthly allowance (currently pegged at 1GB) and build a social network where more data can be earned and traded between friends. Alongside the WiMAX shell for the iPhone, we can also expect to see an iPod Touch edition, USB dongle and mobile hotspot arrive before the network's launch. The company doesn't have too long to iron out the kinks in the business plan however, as it'll go live in the third quarter of 2012.