I received the following response from Blizzard when I posed a hypothetical question to them regarding the use of screen grabs to create a webcomic on a page one sells advertising for:
To: Kevin Huxford
Date: Tue, Oct 7, 2008 at 8:01 PM
Subject: RE: Fair Use Question
Thank you for your patience! I am afraid that this is against our current policies and I apologize for any inconvenience this causes. We do wish you luck with future projects and take care.
From: Kevin Huxford
Sent: Tuesday, October 07, 2008 12:00 AM
Subject: Re: Fair Use Question
Still hoping to get an answer on this. Thanks!
On Fri, Oct 3, 2008 at 5:07 PM, Kevin Huxford wrote:
What is Blizzard's policy on screen shots being used to create a webcomic and then selling advertisement on the webcomic site? I'm worried that compensation for ads on the same page as the webcomic would constitute commercial use.
Folks, Blizzard owns the images. Using screen grabs for 100% of a comic that you profit on without any licensing fees paid to the owner of the images is a violation of copyright. Doing it rarely might be able to skate on parody exceptions; doing it in perpetuity will not.