Well as an observer who doesn't really post anything and just looks at the artworks I kinda must agree with otaku_emmy. The male body can be just as much a work of art as a female body (well personal preference are certain parts of the body obviously) but topless men are not a horrible thing for me personally to see on here.

I'm here for the art mainly so it doesn't bother me too much. Sure, some art is leaning towards, I'm just gonna say it, homosexual men... but I simply don't stare at those for that long?

I don't know how to post links correctly so I hope I'm not breaking some kind of rule.
But for example this:
http://konachan.com/post/show/219906/all_male-dio_brando-gray_hair-headband-jojo_no_kim
This is for me completely acceptable.