The Electronic Frontier Foundation (EFF), joined by “45 organizations (including the American Library Association) – 27 consumer and privacy groups and 18 ISPs and ISP associations,” filed a 35 page brief (pdf) on May 16 with the U.S. Court of Appeals, D.C. Circuit, suporting Verizon’s continued refusal to reveal the name of a customer who used the ISP to distribute music via a file sharing application, as demanded by the RIAA.