1. A method of monitoring application responsiveness over a network, the method comprising: instrumenting a web page that causes a client receiving the web page to gather data sufficient to enable determination of a hittype or a latency or both the hittype and the latency; wherein the latency is a duration from a time a user clicks on a link on a web page, or other action that results in a new web request, to the time the resultant page or content starts loading; and wherein the hittype is an arbitrary value for categorizing or describing conditions under which a web page was accessed or viewed by a client.