http://boredzo.org/blog/archives/2007-03-12/one-month-of-negative-turing-test The personal weblog of Peter Hosey. Thu, 20 Nov 2008 18:15:08 +0000 http://wordpress.org/?v=2.5.1 http://boredzo.org/blog/archives/2007-03-12/one-month-of-negative-turing-test#comment-11976 Peter Hosey Tue, 13 Mar 2007 06:13:40 +0000 http://boredzo.org/blog/archives/2007-03-12/one-month-of-negative-turing-test#comment-11976 There have only been a couple false positives that I know of, all caused by people forgetting to answer the spam-prevention question. As for false negatives, just one—there's no automated defense against a spammer who is either doing it himself or hiring a bunch of cheap labor to do it, but fortunately spambots are still cheap and effective enough that human-delivered spam isn't yet making a major comeback. There have only been a couple false positives that I know of, all caused by people forgetting to answer the spam-prevention question. As for false negatives, just one—there's no automated defense against a spammer who is either doing it himself or hiring a bunch of cheap labor to do it, but fortunately spambots are still cheap and effective enough that human-delivered spam isn't yet making a major comeback.

]]> http://boredzo.org/blog/archives/2007-03-12/one-month-of-negative-turing-test#comment-11970 Andrew Tue, 13 Mar 2007 03:59:02 +0000 http://boredzo.org/blog/archives/2007-03-12/one-month-of-negative-turing-test#comment-11970 My question is, how many false positives have occurred, and how many false negatives? I mean, it even took me a little while to work out what I was actually meant to do. (I realise my question involves a double negative, but that's half the fun) My question is, how many false positives have occurred, and how many false negatives? I mean, it even took me a little while to work out what I was actually meant to do. (I realise my question involves a double negative, but that's half the fun)

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