I'm glad for expensive money sinks like mounts. Mounts/epic mounts/flying mounts I imagine remove a ton of gold from the game.
I believe Blizzard is doing a pretty decent job with this. Last time I tried looking, I couldn't find any exploiters/farmers in Scholo, Strath, DM, and oddly ZG (I saw two single mages go in there and were in there for awhile. No idea why. I can't imagine two shitty geared mages could even kill one trash mob without running out of mana even if they are exploiting).
Also, they seem to be cracking down on the more obvious places for RMT. You used to be able to search ebay and find lots of accounts for sale as well as lots of gold listed. Now, it's harder to find accounts to buy (price seems to have fallen big time) and blizzard is actively shutting down auctions. Gold prices have also seemed to gone up 75%-100%.
Blizzard is also going as far as trying to sue the creator of wow-glider (doubt they will win, but I'm not sure). Wow-glider is a program that the bots use that pretty much automate everything. I checked out their page the other day and had a decent laugh. I enjoyed the part of their faq where they say something along the lines of "if we actually wanted to, we could create a bot that would destroy any human player in 1v1 pvp". I think for the most part that's crap.
on a side note, anyone see the gold farming documentary on mtv? i believe the guy who made it has a site: www.chinesegoldfarmers.com