To be qualified as an “X group“, I would like to see the Freakonomics bloggers publishing a blog post (or more) calling its readers to go trading the jatropha biofuel event derivative at PopSci PPX —and then informing its readers, later on, about the dynamic probabilistic prediction generated. Putting the information on the right sidebar of the Freakonomics blog (for one or two days) does not make the trick.
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Next: THE FREAKONOMICS BLOG AND THE JATROPHA PREDICTION MARKET AT POPSCI PPX NOW FORM AN X GROUP.
