A client and server computers can be provided in the context of a community framework. Portions of the client's user interface can be updated dynamically and granularly via communicating with the server and without reposting the entire page upon each communication. A dynamic content tag library can be provided to add dynamic update functionality to the client's user interface. The developer can use tags contained in the tag library when customizing the user interface for various community members. For example, a dynamic container tag can specify a target area on the client's user interface to be updated dynamically. This target area can be a portlet, portion or a portlet, value or some granular piece of data on the user interface. An action script tag can specify a particular update request to be executed by the server, the results of which replace the old contents of the dynamic container.