Scarab Queen, farmed...

There are three ways that certain players earn more gold than the average. The first and most obvious way is that, because everyone plays the game differently, some players are able to find unusually profitable areas to hunt in, or tricky strategies for killing a lot of monsters quickly. The search for the most effective way to play can be a fun part of the game for everyone -- we all like to see how well our characters can do, and whether we can tweak our characters to be better than they were previously -- and so we at ArenaNet don’t consider this a problem unless it’s extreme. Although a very knowledgeable or tricky player may be able to earn gold twice as fast as the average, this tends not to create a significant problem, because prices for items in the player-driven economy will still stay at levels where normal players can afford them. But sometimes differences in the distribution of wealth can be extreme; a group of players can find ways to earn gold ten times as fast as the average player. In this case, prices can rise to a level where normal players can’t afford to trade for items anymore. Then we have a problem, and we need to adjust the game to bring wealth distribution back into normal ranges. We constantly monitor the game, so we know when a certain place or technique is being heavily exploited. When an issue like this becomes too severe, we make tweaks as necessary to bring things back in line. A lot of there changes go to target A and B.

There are threeds coming up on alt area's way to do things already.