How can we find a balance between Open Access and Commerce, offering free knowledge as well as the possibility of commercial profit for publishers and authors? The founders of PaperC believe that freemium business approaches will be the future of publishing. In this session, they will present a case study of how a freemium model could work to revolutionize the ebook market. One of the central problems of the eBook market is known as the "arrow information paradox": In the fields of information and knowledge, market mechanisms fail because potential customers want to know a product in order to make a purchasing decision. But if this product is itself information, the need for purchasing vanishes once customers know what it contains. Illegal filesharing, which poses a serious threat to publishers, can be considered one of the offsprings of this paradoxal situation. In collaboration with such publishers as O'Reilly, de Gruyter, OECD, and Pearson Education Germany, PaperC is forwarding a freemium model to circumvent this paradox. This model permits users to read full books online completely free of charge, with payments reserved for valuable premium functions: saving or printing pages, copying text with or without citation, highlighting and annotating text selections, and managing their research and books in a dedicated online library. Through granting customers the choice to decide what proportion of the product they want to purchase, PaperC and similar freemium models could ...