Blizzard have a threateningly large fan following. There is no way to sugar-coat that fact. Just a quick Google search and you find many fan-sites for all their products (like this one). And lets not even get onto the topic of forums; there are possibly hundreds just for StarCraft alone. The Battle.net forums are positively epic, for example. Surely this kind of fanfare will have a negative effect on Blizzard's products?