FreeLists / dokuwiki / [dokuwiki] OT: circumventing text captchas Re: Anti spam brainstorming

["Gabriel Birke" <gabriel.birke@xxxxxxxxx>]

Hello Manni,

> Text is easy to parse. But hard to analyze. And even if it 
> were easy to analyze, you could still present puzzles that 
> will beat every machine.
> 
> What's the color of a banana?
> How many words are in this sentence?
> Please type the first character of each word in this sentence!

You don't need world knowlede to answer these questions, a database of
answers would suffice. 

> You also have to consider the fact that link spamming works 
> because its cheap. Raise the cost of spamming and it will go 
> away. There aren't endless resources on the spammers' side 
> for the arms race.

This is true. Let's hope their resources and creativity are more limited
than I imagine them :-)

Greetings,

Gabriel

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