Methods and arrangements to analyze web traffic of a portal are contemplated. Embodiments include transformations, code, state machines or other logic to analyze web traffic of a portal by a portlet receiving a request for web page content from the portal and generating a fragment of a web page. The fragment may include code to collect data from clients on web traffic of the portlet and to transmit the data to a facility for the collection of data on web traffic of the portal and the portlet. Some embodiments may involve a portal requesting web page content from a portlet, and the portal receiving a fragment of a web page from the portlet. The fragment may include code to collect data from clients on web traffic of the portlet and to transmit the data to the data collection facility.