This is the second article, in a four-part series. Its aim is to explain all the mandatory information that should be displayed by any website. In this text Teresa Rodríguez de las Heras Ballell answers the question of how the mandatory information should be presented, the requirements of this information, as well as what is the specific data that has to be made available.

Useful and well explained, this article was prepared by Teresa who is an Associate Professor in Commercial Law at the Carlos III University of Madrid, Spain, a recognized expert in this field and the author of the book on legal aspects of E-Markeplaces "El régimen jurídico de los Mercados Electrónicos Cerrados (e-Marketplace)".