From: Jim Weirich <jim@...>
Date: 2005-09-21T11:03:34+09:00
Subject: Re: Capcha in ruby

On Tuesday 20 September 2005 05:07 pm, Austin Ziegler wrote:
> Yes, I understand that. However, CAPTCHA is also proving to be
> relatively ineffective [...]

I strongly suspect that a lot of wiki related spam (and probably comment spam 
as well) has a lot of manual oversite in the process.  When I was closely 
monitoring the RubyGarden wiki spam, I noticed times when the spammer would 
go back and correct typos in the spam text.  They may use automation, but 
there is a human often directing the process.  And if there is a human in the 
process, then captcha seems a wasted effort.

Does anyone have first hand reports of success with captcha?

-- 
-- Jim Weirich    jim@weirichhouse.org     http://onestepback.org
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"Beware of bugs in the above code; I have only proved it correct, 
not tried it." -- Donald Knuth (in a memo to Peter van Emde Boas)