I missed that thread. One thing you may (as Icelandic) (?) not realise is that in English 'naturist' is generally the outdoor loving-family oriontated type, and 'nudist' is generally the 'out for sex' type.
Nope, sorry...my screen name is not my real name (though it is Norse). I'm American.
My only experience in naturism/nudism is in the central U.S. and in Arizona. I agree with you about the term 'naturist', but would disagree that 'nudist' is "generally the 'out for sex' type"...the 'out for sex' type doesn't last long in the nudist resorts with which I'm familiar, if they are overt in 'coming on' to people. There are open relationships, of course in nudism as there are in the general public, but it must be carried on very privately, among consenting adults.
I'm very conservative about such things and I've rarely been the least bit uncomfortable where we've been (after 21+ years of marriage, I'm very uncomfortable being 'hit on' and wouldn't go if it happened often).
My husband just read this over my shoulder and saw your 'out for sex' comment and yelped, "That's not true!!" He says since the modern naturist/nudist movement started in Germany in the early 1900's the European term is naturist, but the American term is (generally) nudist. The 2 terms are generally synonymous in the U.S. In Europe naturism seems to be the "out in the forest" type, but as most (public) places in the U.S. don't allow nudity, private resorts are the norm here. He also adds that "swinger" is the term used by 'out for sex' types in the U.S.