But as has been said previously, the AH does not introduce more gold into the game. It removes the AH cut and transfers from one player to another gold that is already in the game. I don't see what this has to do with gold sinks.

I am a fairly active AH player. A casual raider. An altoholic with 7 level 85s and am closing in on the 999,999,999g99s99c gold cap. My main toon has a choppa, traveler's tundra, dalaran ring, hilton's sack. I have bought almost all the BOA gear, guild rewards (cloaks, pages, lion mount). I also do not ever farm (other than on the AH) and very rarely do dailies - the actions bringing new, non-existent gold into the game - so why tax players with large gold reserves or many AH postings? Plz quit pointing at the AH as the cause.

Blizz nerfed the costs for dual-spec, riding, flying, etc. etc. They reduced vendor costs and increased farming rates through guild perks.

In WotLK we had choppas, travelrs mounts, cold-weather flying...what sinks have we had in Cata??? A choppa used to cost around 14K and a Tundra 20k, but are even less now with guild perks.