We and several of our clients use WordPress. We love because it’s easy to use and is very customizable. It also updates every quarter or so, bringing cool new features and functionality to an already-cool platform.
WordPress 3.6 is just now out. This review from DesignModo covers most of what’s new. The improved auto-saving and revision management are particularly exciting to a busy agency like Matrix Group.
Do you use WordPress? Which of the new features looks coolest to you?