Internet economics is a systematic review about Internet industry and economy. The World Wide Web is analyzed, utilizing an extensive and comprehensive statistical data/literature review, both as medium and as meta-platform giving the basis for a new and original perpesctive about historical evolution and technological trajectories . Internet markets, their perimeters and dimensions, are described in detail by means of the LIIF Model, a new conceptual framework that allows: a systematic mapping of market structure itself; supply and demand dynamics evolution; a taxonomy of product-services; a clearer understanding of the Internet phenomenon.