A computer network has links for carrying data among computers, including one or more client computers. The recommendations are informed by an interest affinity anomaly function that identifies contrasting interest affinities between recommendation recipients and other users. High velocity air or other inert gas is injected into the water and pellet slurry line toward the dryer near the pelletizer exit at a flow rate of from about 100 to about 175 m3hour, or more. More particularly, the thickness of the insulation block is configured to match the dimensions of standard framing members wherein the slot for receiving the piping insures that the piping is positioned immediately adjacent the back surface of the interior sheathing material. In an alternative embodiment, the winding position of the tape is varied by a fraction of the width of the tape in a first direction after each approximately full turn of tape. PHT and PHA materials can be reverted to starting materials by exposure to acids.