Happy (Slightly Belated) 10th Birthday Wordpress! May, 27th was the content management system & blogging platform WordPress' 10th birthday!  WordPress is the most prolific CMS in the world with a whopping 18% of websites utilizing it.  This includes many high profile sites like CNN, and Reuters.

WordPress is an open source and free platform. It features have grown over the years from a simple blogging platform to a true CMS that can have features ranging from e-commerce to blogging to multimedia galleries and more. It's easy to use and offers developers the flexibility they need to create new features and customizations.

In honor of WordPress' 10th birthday there were events held all over the world, online and offline. The hashtag #wp10 featured tweets, photos and images from WordPress fans all over the world celebrating the 10th birthday.  Additionally Mashable, which runs on a mostly WordPress based platform created this video for WordPress' 10th birthday.

Are you one of the over 18 million WordPress users? Share your favorite WordPress memories, or simply wish WordPress a happy Birthday in the comments!