Website owners, please read this article in full. Understand that pay-per click adds may disqualify you as being "non-commercial" and that just posting a mechanism for responding to a complaint is NOT enough -- a registered agent, via the U.S. Copyright Office is also required.
Many website owners may be under the impression that they are protected by the DMCA when in reality, there are very specific requirements must be met before a website owner can invoke the DMCA safe harbor provisions. See 17 U.S.C. §512(c).
In particular, the safe harbor only applies to service providers who have designated an agent to receive notifications of claimed infringement and providing information about the agent (name, address, phone number, and electronic mail address of the agent) to the Register of Copyrights, which maintains a directory of agents available for publication inspection. See 17 U.S.C. §512(c)(2).