I was talking about simply HubPages. I have found that if I go to HubPages stats after about 90 days, I can locate the terms that my article was found under the tab called "search term data".
I then modify my photos, my tags and sometimes even my title to satisfy those terms.
In one particular case, I rewrote a section of the hub to fully answer the apparent query the search term was seeking.
This analysis has proven to be very valuable to my traffic. And yet, it very simple - essentially search term data spells out what is working for traffic.