I agree. To explain my mention of not using Moodle for a corporate site above... what I meant was for a corporate web page. Mambo is for web sites. Moodle is for e-learning sites. Besides the fact that they both start with M, both use PHP/MySQL and have similar default colors, there is no relation between the two.
Incidentally - I am starting a new Moodle project for a new job right now (which is why I am here). My company requires an e-learning site for external customers and internal users. They looked at learn.com which was.... oh about $30,000 a year!