It seems from year to year, Drupal become more popular. In the year 2009, Drupal is very popular in the eyes of the government. There's news that the Department of Commerce plan to switch to Drupal.
In searching for information, the Department of Commerce to ask the vendor from Drupal to provide information on how Drupal can host several websites with multiple domain names and with one domain name. Of course you know that Drupal is supporting it all.
As we all know that the White House also had to use Drupal. Drupal does have advantages compared to other CMS, and this is desperately needed by these institutions, such as: supporting social networks, the user management and permissions features, easy to create large complex web sites, and many other advantages that make many government agencies switched to using Drupal.
Drupal is the inventor of Dries Buytaert, Drupal is an open source CMS written in PHP programming language.