basschick, I think the fact that the site is published without nudity or sexually explicit material makes it mainstream (you are publishing it with the intent for it to be mainstream).

Regarding how it will be perceived, that is a different story--many people see things differently. For some, it may be erotic, for others it may just be exactly what you see it as--a muscle site with guys posing. But whatever the perception is, I would imagine that the site would still have to be classified as mainstream.

BrianDN