Should companies start using CMSs?

Many a times getting suggestions from employees is a good idea. But creativity does not have a deadline. I think companies should start using CMSs like Drupal, WordPress. Every employee who wants to think out of the box can write his own ideas on his company’s internal blogging systems. This can help companies to get new ideas at faster rate. This system can also be used for various purposes. More to pen later. What do you think about having such CMS (Content Management System) in your company?