This is one of interest to those studying American history who speak Spanish. It is largely an aggregate site, but also has interesting reviews of books, films and events. It is sporadically updated, but has some interesting analysis and insight. In their own words: “Grupo de Estudios Americanos (GEA) nació entre personas ligadas al Instituto de Historia de la Pontificia Universidad Católica de Chile, con el objeto crear una instancia donde discutir en torno a problemas ligados con la historia americana, principalmente en su período republicano” and can be found here: http://estudiosamericanos.wordpress.com/.