Well, that is exceptionally good news. A recent study in the New England Journal of Medicine found that gay men who take the antiretroviral drug Truvada every day were protected from contracting HIV (and those who were less faithful to the daily schedule were still about 40% less likely to catch the virus). And perhaps the most important part of this development (besides the whole HIV prevention part, of course) is that taking a pill doesn't require any sort of consent from a partner. From the New York Times:
The protection, known as pre-exposure prophylaxis, is also the first new form available to men, especially men who cannot usebecause they sell sex, are in danger of prison , are under pressure from partners or lose their inhibitions when drunk or high.
So that is a very good thing, as is the fact that Truvada is an actual prescription medication available right now, as opposed to a new drug that might be stuck in trials for years. Unfortunately, the study focused only on gay men, so researches don't know if it would work for heterosexual men, women, or drug users who share needles. And there are other questions involved that still need attention (like who will pay for it, whether people will actually take it, etc.). But hey: a pill that prevents HIV infections! That's nifty.