In a personal ad, HSV or HSV positive means the person posting the ad has herpes and wants you to know before you respond to the ad.
The herpes simplex virus, also known as HSV, is an infection that causes herpes. Herpes can appear in various parts of the body, most commonly on the genitals or mouth. There are two types of the herpes simplex virus. HSV-1, also known as oral herpes, can cause cold sores and fever blisters around the mouth and on the face. HSV-2 is generally responsible for genital herpes outbreaks Login for more information hsvbuddies.com
In the personal ads that I have seen, LOS means Lost or Stolen.
Androgynous
For sex :)
Long Term RelationshipLTR in personal ads means long term relationship.
professional
water sports
Pay to play
friends with benefits.
In Search Of
OHAC mean in Relationship
Bareback, or no condom
"short Message service" in other words text. It's not exclusive to personal ads.