The Liferay, Inc. company site is built on Liferay Portal. Now, go to http://www.liferay.com/ and find a portal page similar to the following screenshot:
What are the parts in the rectangles made of? They are all made of the web content display portlet.
The static content at the Liferay, Inc. site is created with the web content portlet (or web content display portlet). It is displayed with the web content display portlet.
The Liferay forum site at http://www.liferay.com/community/forums is made of the messages board portlet, while the Liferay blogs site at http://www.liferay.com/community/blogs is set up with the blogs aggregator portlet and the blogs portlet.