Electronic Frontier Foundation

“ EFF represents both the anonymous critic and the Internet Archive.
"We're glad that Landmark withdrew its subpoenas, and our client's right to speak anonymously was preserved," said EFF Staff Attorney Kurt Opsahl. "Hopefully Landmark has learned its lesson and will cease its campaign to stifle criticism by misusing the DMCA."
The Digital Millennium Copyright Act (DMCA) allows a content owner to issue a subpoena for the identity of an alleged infringer without first filing an actual lawsuit. The provision can be used to intimidate Internet users who wish to remain anonymous online. ”

“ Earlier this year, EFF helped to preserve the anonymity of online embroidery fans critical of an industry group, and also protected the identities of users of an online message board discussing Oklahoma public schools. ”