13. A system embodied on a computer readable storage medium for URL virtualization that provides a contextually relevant URL to a requesting agent, the system comprising: a browser parameter determination mechanism for matching incoming request header parameters with a version of content, wherein the incoming request header parameters are indicative of a type of requesting agent and wherein the version of content is specific to the type of requesting agent; a URL lookup mechanism for accessing a URL storage area to determine whether a contextual URL exists for a non-contextual URL received from the requesting agent, wherein the contextual URL provides a human-readable description of the contents of the requested content version, wherein the URL storage area comprises a lookup table for matching the non-contextual URL to the contextual URL, and wherein the URL lookup mechanism inspects the lookup table to determine whether the contextual URL is a server-side redirect or a server-side transfer; a redirect path control to redirect the requesting agent to a new URL; and a transfer path control to execute the non-contextual URL while the contextual URL is provided for display.
17. The system of claim 13 , wherein the contextual URL comprises a URL that references a directory.