MS uses non-MS tech to power Zune Website

amichalo writes: Microsoft has selected the popular PHP/MySQL forum software package vBulletin for it's new Zune promotion website, Zune Talk. Further, the site also features Google AdSense ads on the site, rather than their own MSN or recently announced Microsoft Live ads. It is curious why Microsoft, with their large Zune marketing budget and access to Microsoft technologies would select a solution based on non-Microsoft technologies. What do they know that we don't?