Quality of the ISP will also affect the quality of the netflix customer's viewing experience. If netflix is constantly rebuffering and has lower bitrates due to congestion at the ISP, guess who the typical non computer tech literate customer is going to blame first... Netflix. Netflix has to track average bitrate performance per ISP, per region to properly plan the expansion and configuration their content distribution net anyways. It doesn't take much effort to create and release a graph of the data they already collected and analyzed for internal use. Steering customers to ISPs that perform well with your product makes good business sense. I as a customer find this data useful to determine if my ISP is actually expanding speeds/capacity or are they letting their network congest and actually lowering speeds. Netflix need not put up and shut up with crappy ISPs. If naming and shaming gets them to clean up their act, so be it.