The next best thing in internet advertising is already here with widgets. Widgets, also known as gadgets, are embeddable chunks of code  that can be implemented into any HTML coded site without any need for compiling from the end user. This means a lot of potential for creating intelligent, clever, and interactive widgets that could prove useful for many companies. When you buy space for an ad on another website, you are paying for prime real estate, depending how valuable that website is. Now as to how you want to develop that space is up to you. Many companies take the tired and ineffective approach of filling up those valuable spaces with banner ads. These ads are barely to  
completely non-interactive and the only people I can think of who would detract themselves from viewing their favorite site to click on banner ads are people with short attention spans.

Los widgets son pequeñas aplicaciones que se instalan en el escritorio de los usuarios o en páginas web permitiendo mostrar contenidos de terceros en nuestro site o directamente en el escritorio de los usuarios.

Mientras que el email aun es la herramienta para el marketing online más importante, actualmente se necesitan otras herramientas complementarias para entregar el contenido.