This is the first article, in a four-part series. Its aim is to explain all the mandatory information that should be displayed on any website. In this report Teresa Rodríguez de las Heras Ballell, Associate Professor in Commercial Law at the Carlos III University of Madrid, Spain, explains as a starting point, the definition of a provider of “information society services” and the basic requirements to qualify within this concept.

Teresa is also author of the book on legal aspects of E-Markeplaces “El régimen jurídico de los Mercados Electrónicos Cerrados (e-Marketplace)” and her experience and knowledge make this series an essential reading both for new e market places, and for existing e marketplaces as a validation of their current practices.