Looks like the site is down again.
The site gave out a very unintelligent one sided excuse for being down. For all I know, I never heard of creating a patch to a game that you've purchased is illegal. You did not gave away the game. You did not change the code. And, you own the game.
Let say, I brought a game and my friend brought the game. We want to enjoy LAN play because one of us have laggy connection.
I can see this in many situation. Car trip, lan party, or when internet is down in one of those night.
I am losing respect for Blizzard every day.