Any artist that is working apart from a private or group studio that hires models should seriously consider buying Virtual Pose 3. If you want access to models that never take breaks, never complain about long hours and are readily available 24/7, look no further. I mean where are you going to find subjects (and subjects that are proportionately pleasing to the eye, no less) to study the structure of human anatomy - in the round - at such an unbelievably low price???
If you're confused about zooming to a particular area of the body, read the instructions in the hardback book, and if that's not enough read "dramaqueen"'s review from February 20, 2005 here on Amazon. She will spell it out in detail for you. Very nicely done too, I might add.
Despite having some minor pixelation of the photos at full zoom, I can't find any fault in this resource. This whole "censorship" issue is silly in my opinion. I would rather concentrate on the form itself, instead of particular details that would be more suited to a scientific study/drawing, rather than a work of fine art.
If you're serious about studying the human form, and need a model in your traditional or digital paintbox, check out Virtual Pose 3.