http://community.vietfun.com/showthread.php?p=12124211
http://forums.openprinting.org/read.php?19,143452
http://facenet.net.nz/forum/topic/9580
http://www.crazyengineers.com/threads/intended-to-promote-the-sale-of-music-recordings.91806/
https://bitcointalk.org/index.php?topic=1649451
https://www.offtopic.com/threads/that-allow-them-to-become-more-than-just-a-song.5509586/