Guidelines for submitting adult content?

I'm ripping models from a game( Scarlet Blade ) and I've noticed a few of the names getting "( nsfw )" added to them. I am wondering, if from this point forth, should I add "( nsfw )" to the models with adult content?

Also, whilst on the subject, this game contains models with partial nudity. Should I add black rectangles to block out the partial nudity in the icon / display pic, or should I bypass said model completely?

Regards:
Ecelon