This report provides an overview of the relevant economic research literature on platforms or multi-sided online markets. It discusses platforms from a regulatory policy angle, including potential market failures in platforms, the extent of self-regulation and possible regulatory responses...

Free!! Google and Facebook!!! We all know them, what to worry about? Everything! The giants of the internet are expanding into every corner of the economy, politics and our lives. They control the majority of digital advertising; Alphabet, Google's parent, and Facebook receive more than 60...

P2P file-sharing dominated the illegal online uses of copyrighted materials since its appearance in 1999. In 2012, I have concluded my research on this field in a monograph. Six years passed by and it is time to double-check what foreseeable consequences came through and how some other...