Like most of these things, it misses out more of the naturist places i visit than it includes.

A good effort, with much useful information - but, as John points out, it misses out quite a few naturist haunts - so many of them as to make this document useless.
Many places that are missed are beaches used by naturists although they have not officially been designated naturist beaches.
More suprisingly, unless I am wrong I cannot find any trace of a number of great resorts, all of them registered with Fédération Française de Naturisme. I will just mention "Domaine du Grand Bois" (200 pitches for tents and caravans on 90 acres of ground ), just to the South-West of Lyon in the wooded mountain area known as "Mont Pilat", or of the lovely (and very large) resort "La Chiappa" in South-East Corsica, or "U Furu", an inland naturist resort in South-East Corsica too.
The map on the website of Fédération Française de Naturisme http://www.ffn-naturisme.com/ is much more complete, and more useful.
My guess is that this is an official effort by some government agency, which was compiled from forms filled by the naturist resorts, and put together by people who are in no way naturists and who are unable to realize the shortcomings of their map and to fill in the gaps.

I have a brand new spare copy of the FKK Resenfuher (Europe) book 2014 if anyone is interested, lists ALL the smaller sites as well....trouble is it is all in German!!

The most comprehensive list of naturist camp sites in France is the one published by the official French camping club at http://www.campingfrance.com/
It included all the known camp sites in France and is searchable by area and type of site and facilities.
Naturism is one of the search criteria.
Although primarily in French many of the pages have English versions.

A very useful site. Thanks for pointing it out, John, I must admit that I did not know it.

I knew I had soul.