Interesting article. I found this to be pretty funny about the banning of exploiters...
"To give some perspective on our actions against exploiters, let’s discuss the karma vendor exploit, where an item was priced at 21 karma instead of 35,000 karma. In this case, we made a mistake and many players got some awesome weapons for very cheap. Does a single player buying a weapon, to use, damage the game or really hurt the players? Not terribly, but getting cheap weapons for your characters wasn’t the problem. The problem was the 1.46 million weapons purchased by 4,862 players, which averages over 300 weapons per player. There is a fundamental difference here between players who got a cheap weapon and players who found a bug in the game and took advantage of it. The latter attempted to create wealth for themselves at the expense of the other millions of players that are injured by exploiting behavior."