We are presenting a joint study between Buenos Aires and Mar del Plata University of website Red I (a). The study refers to interfaces design, usability conditions and the link with Web 2.0. The aim of the network is to strengthen and support, in the Argentine and Latin American contexts, twinning and development of shared exploratory experiences, with different types of institutions involved in design development and self management. The study analyzes and evaluates the interface redesign criteria and complements it with a thoughtful review on the site development.