Foromarketing, el portal de Marketing y Ventas Inteligentes en español desde 1998. Todo sobre el Marketing, las Ventas y la Comunicación del siglo XXI. A very good and reliable source for terms and definitions in regards to Marketing and Advertising.
A simple and straight forward marketing dictionary which can be a good place to start when looking for terms and definitions. The source is not too reliable thus caution should be used when employing the terms.
Diccionario de Publicidad en Internet. Términos de publicidad online, publicidad en buscadores e Internet, estrategias de venta en Internet, SEM, etc. Also a very informative and helpful term glossart that is available for free and can help me with my research.