Original Comment by: Adam
Personally, my ideal game is much the same as Rivan's: effort in equals status out. But I'm not naive enough to think that any mainstream game will ever hit that. At some level that ideal has to be enforced by the players themselves, as a community, and as you get larger the idea of that sort of community breaks down rather spectacularly. So either you play a niche game where the player community enforces the strict separation of real world status and ingame status, or you deal with the consequences of breaking that separation.
I'm also not sold on a couple of the answers given in the article. First is the point Mo makes: how do you ensure that you CAN'T go the other way? Not all eBay transactions are gold farmers selling gold for money; legitimate players might end up with a windfall they want to sell for RL money, or they might want to sell their account. If you believe Fraser-Robinson, then the company selling gold to players is going to solve this for you. But even Sony's Station Exchange realizes there's more to it than gold farmers.
The second issue, like Dimitrius above me, is that people still seem to be waving off the issue of legal liability. Fraser-Robinson makes the analogy of an arcade, where you put in a token and get out whatever your skill allows for. But in the arcade example, no one is going to pay me in arcade tokens for doing something for them, and I can't use my 5 tokens to make 50 tokens. So in some sense the analogy doesn't work. (They never do...) So to take a little bit more extreme example, if I build a pool in my castle filled with gold coins, and some bug in your game deletes my pool, you have in a very real sense cost me money, just as if I put a token into the Space Invaders machine and the power goes out. In the latter example, you've cost me 25 cents and at worst I storm out of the arcade in a huff. In the former example, it could easily be hundreds or thousands of dollars.
It's the same sort of issue that might come up with Station Exchange. Suppose warriors are the most desirable class in the game, and I have the most rare and desirable weapon in the game, the Giant Hammer of Stubbing Toes of Dragons, so I try to sell my account for $1000. Tomorrow you release a patch that nerfs the Giant Hammer of Stubbing Toes of Dragons so it's no better than the Giant Sword of Causing Paper Cuts. Now my account is worth $500. Is the company liable for my $500 loss?