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Trick or Treatment by Simon Singh & Edzard Ernst
Bad Science by Ben Goldacre
Whatstheharm.net by Tim Farley
Skepdic.com by Robert T. Carroll
Postscript:
After talking to some people at Skeptics in the Pub last night, I realised that quite a few people don’t know how to play “Top Trumps”. I thought it was a global phenomenon, but according to Wikipedia it was more of a British Schoolboy 1970’s thing. Perhaps this is why US links have been referring to them as Collectors Cards, presumably more akin to collecting a set of cards given away with chewing gum. “Top Trumps” were always sold as a complete set to enable you to play the game, and in case you actually want to play top trumps with them, here are the rules.