alex_beecroft mentioned it yesterday--the "ranking" line is disappearing from books listed on Amazon. Not all books, as far as we can tell, just GBLT-themed books.
Now I check my amazon rankings obsessively, and can state with surety that this morning between 9:00 and 10:00 (Eastern Time), the ranking line disappeared from GYM DANDY after having been there since the novel was first listed as "coming soon" back in January.
I'm not given to paranoia, but I searched a small sampling of non-gay novels, and they still have it. I think we're moving into WTF territory. Everybody check to see if you still have a ranking line and report back, along with whether or not your novels are GBLT.
ETA: Might be all erotica, including m/f, as well. Huh.
See "Amazon.com Sales Rank:" below, pulled from one of Paul Quarrington's books.