bs0d3 writes "In Leipzig, Germany, an 8 hour music/dance party event was organized to play nothing but creative commons music the entire time. A German copyright group called GEMA told the organizers that to be certain that no rights were infringed, it would need a list of all artists including their full names, place of residency and date of birth. After the event GEMA sent an invoice for 200 euros. They claim that behind pseudonyms some of their artists may be hidden and produce things that they would not earn anything from. According to German law, you are required to prove that an artist is not with GEMA. So even though GEMA probably does not have rights to any of the music, they are not required to prove that they do."
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technical mistakes of the Department of Defense and IBM.
-- Edsger Dijkstra