Actually, it's only a fictitious web project the IBM Internet Technology Group team developed, but it's quite interesting that they used Drupal for the chosen platform to facilitate Using open source software to design, develop, and deploy a collaborative Web site:

Drupal is a relative youngster compared to other content management systems (CMSs). However, we got the impression the framework was well written, robust, very extensible, and seemed to have a thriving development community that was generating a lot of adoption and support....