You might think that Clay Johnson, a campaigner for transparency, would be pleased to see a ferret, with a deerstalker hat and magnifying glass, pop up on his screen. This creature is the mascot for Beta-DataFerrett, an online application offered by America's Census Bureau.rnIn fact, Mr Johnson hates the beast. A builder of digital tools that make sense of public information, he does not need anybody to supply him with applications.
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