Iridescent Trading Cards

Linkin Park have set up a very interesting game for the fans. the band have put out six trading cards (1 per member). People need to flip the cards, find the code, by sharing the link on their Facebook or Twitter, fill it in, on and get access to a very special download, we won't reveal! It's super exciting and super awesome too, so just do it, have fun, for your help, we give you the locants :

Trading card Locations on the web :