Articles:
07/18/09: Web MVC (Oliver Steele; English and Spanish)
03/13/09: 32 Most Important SEO Tips (Edwin Reyes - Entireweb Newsletter; English and Spanish)
09/29/08: Spring Acegi Security Framework (Bart van Riel and Leandro Iriarte; English and Spanish)
06/28/08: Inversion of Control Containers and the Dependency Injection pattern (Martin Fowler; English and Spanish)