Features : Plugins & Themes, Widgets & More…
Themes allow users to change the look and functionality of a WordPress website or installation without altering the information content or structure. 1600+ free themes are available at http://wordpress.org/extend/themes/. Commercial themes are also available.
One very popular feature of WordPress is its rich plugins. which allows users and developers to extend its abilities beyond the features that are part of the base install.
WordPress has a database of over 22,000+ plugins with purposes ranging from SEO to adding widgets that can be found at http://wordpress.org/extend/plugins/
Widgets are small modules that offer users drag-and-drop sidebar content placement and implementation of many plugins’ extended abilities. Widgets allow WordPress developers to add functionality to their sites. These small modules can be used to add functionality such as a slideshow, Facebook-like box, small news slider, and more.
Multi-User And Multi-Blogging
You can have multiple users on a WordPress site with different user roles and Capabilities. A user with Administrative rights have full authority to manage WordPress site while a User with subcriber role has minium capabilities.
Multi Site Network
As of WordPress 3.0, you have the ability to create a network of sites by using the multisite feature. With WordPress Multi Site feature you can create a network of WordPress base websites just like WordPress.com where any one can register and create a free website/blog.