No changes on amazon.co.uk, I can see all these "unranked" books just fine in their ranking system. Not so for the amazon.com site. Maybe you've hit on the old "SEX=BAD" problem. Another example of this is Grand Theft Auto (steal cars and kill people, totally illegal) being fine for older kids; but when it's found that the main character can engage in a sex game with his lady friend (not illegal for older kids and necessary for the existence of life) the game is banned and then later released x-rated. Go figure.
I blame obese conservative wankers in suits who think that sex only exists on Sunday evenings through a hole in a sheet, when absolutely necessary, and between a married man and woman in their late 30s who don't actually know each other anymore. These are the people who's lawns are identical and for whom "different" is a virtue of the satanic and godless heathen who deserves to burn in hell for eternity. Lets just boycott these obese wankers.
In the mean time, good luck with your amazon.com campaign. My tip: order from the UK site. You'll have to wait a while longer for your books, but with the british pound worth less than a teaspoon full of gooseshit and falling you'll probably get a good deal :P