We have together explored many of the portlets in Liferay's collaboration suite. You have seen how you can configure all of the portlets in a similar fashion using a unified user interface. After this, we went over all of the portlets in succession.
The Blogs and Blogs Aggregation portlets can be used to manage shared blogs or blogs belonging to a group of people at once. These portlets have all the features you would want in a blog, including rich text editing, links to news aggregators, tags, RSS feeds, and more.
The Calendar portlet likewise can be used to manage a shared calendar or a group calendar. It includes features for events, event notification, repeatable events, and import and export to and from the standard iCalendar format.
Integrating mail with your portal is easy with the Mail portlet. You can add as many custom or Gmail mail accounts as you wish, and this portlet can keep them all organized in one place, together with the rest of the things Liferay is aggregating for you.
Discussion becomes easy with Liferay's Message Boards portlet. This portlet can be used to manage heavily trafficked discussion forums with ease. It inherits all of the security features of the Liferay platform and includes administrative functions for thread priorities, moving threads, nested discussion categories, banning users, and more.
Liferay's Wiki portlet is a state of the art wiki application that users can make use of to collaborate on web pages. Again, it inherits the strengths of the Liferay platform in the form of security, interface, and search. You can use the wiki portlet to manage several wiki nodes or use many wiki portlets to manage one node each.
Tying all of these applications together are tags and categories. Tags can be added to any content by end users, and hierarchies of categories can be added to the system by administrators to be applied to content anywhere in the portal. These help your users to find the content that is most relevant to them, empowering the search to be as accurate as possible.
Liferay's collaboration platform is a full suite of integrated applications that empower users to work together. You can use them to great effect to enhance your web site and to build a vibrant, active community.