I think you guys should get jobs in the stock market lol. Essentially the AH is the stock market but working in a video game
My biggest frustration these days is how cheap Frostweave bags are selling for, no idea why the market fell so hard but bags that sold for 70g are now selling for less than 50g on my server (Uther).
My only constant gold maker has been transmutes. I do not play the AH, instead I just post any excess mats I have (had enchanters that I DE all the dungeon drops from) and this can make a bit of gold here and there.
Otherwise I do the dailies as per the guide posted here, but I do think it gets VERY boring really fast.
I have found that running dungeons and just selling greys can just about keep up with repair bills for the dungeons.