Other interesting facts -- wealthy players make use of addons and websites to boost their gold-earning prowess. While that shouldn't be much of a surprise to anyone, it does mean that those looking to get a foot in the door may want to check out the various addons and websites listed if they'd like to be competitive with those already pulling in the gold. In addition, there's a section that inquires about ToS-breaking activities, and according to the survey, botting doesn't seem to be making a big impact.
All in all, it's an interesting survey, and has some good food for thought for those seeking to make more gold, or just wondering where they stand in the grand scheme of wealth and WoW players. Xsinthis has the full results, including more information about demographics and in-game activities, available for reading on his website.