I made a thread asking if all MMORPG's are as buggy as WOW, and many here were quick to defend Blizzard. Though, with all the server crashes they've had, there's very little defense I can think of for this company putting out such an untested product.
Of course, if all MMORPG's are this buggy, then I guess its not suprising that people would give Blizzard credit. Clearly, this is a genre that needs a lot of work in its quality assurance.