The GAF thread on this is downright disgusting. Multiple people in there saying it's ok to not tell people because the chances of getting HIV from a person taking treatment is "practically zero" or whatever technical speak the CDC said on the matter. Plus, hey, you know, it doesn't kill you any more*!
* - so long as you can afford the "HIV cocktail" you have to take daily without missing doses. oh, and I hope the drugs work on you, there aren't many alternatives. oh and I hope you like frequent doctor visits to make sure your viral load stays low.