How does Blizzard feel about private servers?

And at what point does it cross the line from legal, to illegal? How is that defined?





Thanks.|||Since private servers take away from the main blizzard community, blizzard goes after these private servers furiously, either shut it down or we sue since its breaks copyright laws.|||according to WoW EULA (end user license agreement) all private servers are illegal. Of course they know theres plenty of them but generally they're left alone if they're not making money. They shut down molten wow pretty fast (an old private server that was insanely fun and the owners made a lot of money)|||blizzard hates em if they make money