I would like to respond to two points made earlier:

Gender is no protection, obviously, against a disease that is spread by body fluids. Any exchange of body fluids--blood, vaginal fluid, and sperm (some research also implicates saliva)--carries the risk of transmission of HIV, plus diseases such as Hepatitis C and STDs.The risk is NOT equal. There is a MUCH higher proportion of HIV viri in semen as compared to any other bodily fluid. Saliva generally appears not to support them in viable condition.

Gays/lesbians/bisexuals are not more responsible for the spread of HIV than hetereosexuals, since sexual practices among all groups carry a similar amount of risk. Although I completely agree that nonheteros are not more RESPONSIBLE for the spread of HIV than heteros, it isn't the case that all sex is equally risky. Lesbian sex (without accoutrements) is almost completely safe. Heterosexual vaginal sex is almost without risk for the man if the woman isn't menstruating. Anal penile sex is the most dangerous because a) the rectum isn't designed for it and tears, and b) the aforementioned higher proportion of HIV in semen.

Another point in the body with tons of HIV in it is the tonsils. But that doesn't seem to add to the risk of oral sex, at least...

Also (back to the main idea), has anyone noticed the parallels with the way the Churches used to treat lefthandedness? It's the devil! It's a bad habit! It's.... supernormal!