As you mention, many of these sites seem to be out of Russia/Ukraine.

YEARS ago, when I first discovered nudism, there was a site called Holy Nature that came up prominently in search engine results. As I discovered, the site was the homepage for a legitimate naturist group in St. Petersburg, Russia associated with the Russian Green Party. The site *prominently* featured many photos of the founder's young teenage daughters and their friends nude on the site to the point that an American naturist magazine accused the group of exploitation/misepresentation.

My feelings on this are complicated and mixed. At the time, I was a very naive teen myself with no concept of laws and legality. To me, it was just a revelation to see that there were people my age, at a time of peak insecurity, who were comfortable with nudity and what looked like a forbidden freedom to me. In a way, I think teens are at a loss in being denied seeing the bodies of their peers in a way that isn't sexual (instead you have rampant revenge porn circulating schools). HOWEVER, the glaring problem in retrospect is this site was't representative...there were no boys and adults took second stage. Whatever the site's intent in inevitable that people are going to be viewing the photos who have no real interest in nudism. As for the sites you mentioned, I try to avoid even clicking on them.