The Electronic Frontier Foundation and a coalition of public-interest groups (the Center for Social Media, School of Communications, American University; Program on Information Justice and Intellectual Property, Washington College of Law, American University; Public Knowledge; Berkman Center for Internet and Society at Harvard Law School; and the American Civil Liberties Union of Northern California) have issued "Fair Use Principles for User-Generated Video Content."
Here's an excerpt from the press release:
Fair uses have been mistakenly caught up in copyright enforcement dragnets in the past. For example, earlier this year blogger Michelle Malkin's video about rapper Akon was erroneously taken down from YouTube after Universal Music Group (UMG) claimed copyright infringement. In that case, two excerpts from Akon music videos were embedded in a longer commentary about the rap star. Although UMG ultimately admitted its mistake, automated content filtering raises the possibility that commentaries like this might be blocked preemptively in the future.
With cases like this one in mind, "Fair Use Principles for User-Generated Content" describes six steps that service providers and copyright owners should take to minimize damage to fair use during copyright enforcement efforts. One key principle is "three strikes before blocking" — verifying that the video matches the video of a copyrighted work, that the audio matches the audio of the same work, and that nearly all of the clip is comprised of that single work. In addition, if a video is blocked by a content filter, the creator should be given an opportunity to dispute the filter's determination.