3. The method of claim 1 , wherein the second relationship model further includes weightings assigned to the second links, the weightings indicating values of the second topic nodes connected by the second links in leading the user of the first device to access the media resource.
3. The method of claim 1 , wherein the second relationship model further includes weightings assigned to the second links, the weightings indicating values of the second topic nodes connected by the second links in leading the user of the first device to access the media resource. 6. The method of claim 3 , further comprising automatically performing a predetermined action in response to the weightings increasing such that the values of the second topic nodes exceed a threshold.