Ordered List has conducted a CMS Survey, which only got 189 responses, a bit low to be really interesting, but still. The survey tells us that WordPress was the most broadly used system, with “Other” as #2, and Expression Engine and Drupal following after that. Expression Engine obviously have happy users, since 64% was very satisfied with the system.
Be sure to check out the Ordered List results post, with all the numbers, as well as very nice looking pie charts. Gotta love those wooden pies!