"If we were contacted by a copyright holder with a complaint about Wikiquote, of course, we would attempt to respond within reason to resolve the complaint without anyone's having to resort to litigation. The Digital Millennium Copyright Act actually provides for services like Wikiquote a way of resolving copyright complaints without serious risk of litigation through its notice-and-takedown procedures. I'm not aware of any DMCA notices regarding Seinfeld quotations on Wikiquote."