I don't think I'm getting the same thing out of the PSI article. As I read it, and some articles written back when the Ufer system was first implemented, I thought the Ufer ground was far superior to grounding rods, and in fact, in some communities where the soil is poor, building codes require the use of a Ufer ground if it is available, and only permit the use of grounding rods if a Ufer is not practical. I live in the desert and plan to put one in, so I'm very interested in some clarification if there are some EEs lurking out there :-)