If You Provide a DMCA Takedown Notice, Provide It Properly
In Terms of Use and the Digital Millennium Copyright Act (DMCA) I described the six elements that a copyright owner must include in a DMCA takedown notice sent to a service provider that is hosting infringing content. Perfect 10 v. Google shows that a DMCA takedown notice will not be effective if it lacks the required information.
Perfect 10, which creates and sells photos of nude models, brought suit against Google, alleging, among other things, copyright infringement based on caching and hosting of photos.