I think many in this thread are confusing anonymous sex with stealth. In all of my profiles it states that I am neg and will take loads from anyone. If I were to go to a party and offer up my hole to every cock there a poz guy should not feel guilty about diving in. To go back to the car analogy I am leaving the key in the car leaving the door running and yelling out that my car is available if anyone wants.
Now, stealthing involves premeditated deceit with the expressed desire to harm someone. If I ask your status and you lie, then insist upon a condom and safe sex and you poke a hole in that condom on purpose, you have then purposefully defied my expressed personal safety concern for your own benefit. Sounds wrong to me.