18. The computer-readable medium of claim 13 wherein the weight is further based on using a viewing length differentiator.
18. The computer-readable medium of claim 13 wherein the weight is further based on using a viewing length differentiator. 20. The computer-readable medium of claim 18 , wherein the viewing length differentiator includes a factor governed by a determined type of a user generating the individual selections, and the weight is further based at least in part on the determined type of the user.