I know that I don't have it. I was tested recently and have had the same partner for the last 8 years. I'll get tested, most of the time, once a year. My only concern questions are A) is it someone I know and B) Do any of my friends have to directly be worried?
I've seen what HIV/AIDS can do to a person. I watched my Uncle Mark practically deteriorate before finally losing the battle. Although there are treatments out now that allow the infected to live almost a completely normal life and years beyond what they would have if they caught it in the late 80's/early 90's, it's still hands down one of the scariest illnesses to have. There is also the unfortunate stigma and subsequent embarrassment for having it. You can tell the world you have cancer but not HIV. At some point you have to put your pride aside and get it out there.
I don't personally need to know the individuals name. Yeah there is a bit of me that's curious but that's because I'm human. However, in the age of the internet, simply saying "I'm John Doe and I have HIV" gets the message out there much quicker than trying to track down the random girl who you think's name was Bridget in Toledo, OH that you banged 4 tours ago. Chances are the random person you banged on tour remembers you more than you remember them. The quicker they find out, the quicker they can get tested. Getting it out there immediately could prevent a potential person you infected from sleeping with someone tonight and giving it to them. I'm rambling but you get the point.
Hopefully this person does get the courage to put it out there soon. I can't imagine what they are going through at the moment so I can understand the want for privacy. If they go about it the right way, they can definitely turn a negative into a positive though.