http://file.wikileaks.org/file/FBI-pedophile-symbols.pdf

originated in

UNCLASSIFIED/LAW ENFORCEMENT SENSITIVE

FBI Intelligence Bulletin, Cyber Division, Innocent Images National Initiative
31 January 2007
(U) Symbols and Logos Used by Pedophiles to Identify Sexual Preferences
Q-FBI-2200-005-06, HRWC CAC-VI.A.5