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Here's a nice example of an infographic about something technical. It's called "How a bitcoin transaction works":
http://spectrum.ieee.org/img/06Bitcoin-1338412974774.jpg
Sam. - -- Sam Tuke Campaign Manager Free Software Foundation Europe IM : samtuke@jabber.fsfe.org Latest UK Free Software news: uk.fsfe.org Is freedom important to you? Join the fellowship.fsfe.org