Pretty much the rule we go by is TOS 4 which is no obscenity. The simplest guide is no nudity or underwear but you may post swimwear or street clothes. MTF tops are ok pre HRT and FTM tops are ok post surgical. We do this because we have enough trouble staying off black list with the transgender label and if we were to allow nudity, access to the site would be denied to many more.
Passing HRT information through PM is forbidden as it could lead to self medication but you may pass images through PM as we are only concerned about the images being viewable by the public.
