You must understand what naturist photos are if your intention is to increase understanding of naturism by sharing bare.
In my opinion, naturist photos do not emphasize the genitals (boob and crouch and dangling dick shots), portray sexually suggestive poses, try to attract a sexual relationship, or emphasize body jewelry, especially if the person in the photo is aroused or clearly trying to elicit arousal in others. Naturism is simply not about sex.
With naturist photos, the context of the photo is as important as the nakedness. The focus should be "look at me doing something while nude" rather than "look at my nude body". For that reason, it is really not important if the photo is a front or back shot, although front shots probably portray openness about naturism better so are better for the naturist cause.
Group photos often illustrate naturism better than individual photos.
Here are some photos that I would describe as naturist (you may have to copy this link into your browser to see the photos): http://imageevent.com/kenandjane/nphotos
What do you think; are these naturist photos that portray naturism positively?