Sometimes it seems every time Blizzard fixes an exploit in the game, another one pops up because of the fix. At least that's what this guy says (and he does make sense).

Blizzard is the undisputed king of polish in the MMO landscape but they sure seem to suffer from short sightedness in their game mechanics sometimes. Maybe this is not because of any fault of their own but rather the size of the game they manage. Its hard to predict the effects of a patch on a virtual world when it has over 8 millions random variables running around. A high amount of players definitely seems to increase the odds of someone finding a way to exploit any new changes. Human nature and competition makes sure knowledge of the exploit spreads quickly. Lets look at some recent unintended consequences Blizzard created and ignore the classics like Hakkar's Curse of Blood incident.