It seems that hormigas.org updated its interface last March (2007). The site is devoted to the ants of the Iberian Peninsula (Spain and Portugal) and its curated by Kiko Gómez and Xavier Espadaler. It is now a site easier to navigate and its data is now handled with a proper built-in database. It is also a pleasant-looking site with a simply design.
Looking at their ClustrMaps site counter it is interesting to note that the bulk of the site's hits come from Latin America. This is not surprising given that the site is one of the few such sources in Spanish. The general information on ants provided by hormigas.org is of universal use of course (classification, glossary on ant anatomy, etc). However it does shows the need for such sites and web-resources for Spanish-speakers interested in the native ants of the vast and species rich Latin American region.