Are you mental? The paragraph above it says:
WoW Insider is not owned, operated or affiliated with Blizzard's World of Warcraft game. If you have any technical or account problems, you need to contact Blizzard directly. Go to worldofwarcraft.com or wow-europe.com and look on the left hand column for their Support links.

Or contact Blizzard Customer Service directly:

And after that, it has the phone numbers...

Are you freaking kidding me? "At least they edited it"? Editing the picture makes it worse. That's like vandalizing another artist's work without his or her consent. Worse still is the fact that the fireworks box does not even mention the name of Blizzard or the original artist. Sorry, but copying some text from a website doesn't even compare to editing and using another artist's work without his permission. Apples and oranges, mate; not even remotely close.

Furthermore, I'd like to clarify what we're talking about. We're talking about a blurb for a phone number to contact for support. The blurb says all of "This is the number to call for support. This is when they're in operation to take calls." It's not as though they copy-pasted an article or some such, which would be plagiarism. I'm fairly sure you're grasping at straws here, and I'm glad to see no one's being fooled.