Yeah, turns out Amazon's listing GLBTQ books as "adult content", which means they are no longer listed on amazon's sales rankings.
This is upsetting for several reasons.
Firstly, in several cases, the books aren't even showing up in searches -- not even using the complete title and author's name. In addition, the lack of rankings mean that these books are effectively made invisible in terms of best-seller lists, and the option Amazon provides of "If you like _____, you might also like ...." which means that unless you specifically look for a particular title (and sometimes, not even then!) you're not likely to stumble across another book that might interest, or entertain, or help you.
And you know what? This would be aggravating as hell purely because I do not believe that anything remotely sexual or anything containing *gasp* TEH GAY should be hidden away. I would be very annoyed, but I would understand, in a way.
Explicit heterosexual content is, in many cases, NOT being marked as "adult content". Heather Has Two Mommies has been deranked, Playboy: The Complete Centerfolds has not. Stephen Fry's autobiography is deranked. Ron Jeremy's is not.