From Box UK, a survey of business models used by the top Web apps, most of them variations of ad-supported Free and Freemium. In the chart below, the largest segment (ITA) is ad-supported, the second largest (ISV) is Freemium. After that is referral (ITR) and then the sale of virtual goods (IPV), such as the gifts in Facebook. “We spent a few hours going through the Webware 100 Top Web Apps for 20
