> -----Original Message-----
> From: squeak-dev-bounces at lists.squeakfoundation.org 
> [mailto:squeak-dev-bounces at lists.squeakfoundation.org] On 
> Behalf Of oxe
> Sent: Thursday, September 01, 2005 3:25 AM
> To: squeak-dev at lists.squeakfoundation.org
> Subject: Re: Wiki Vandalism again
> 
> yes but they still help.
> 
> spammers can get around anything.
> 
> there may be newer better methods, but
> the type-in-the-letter hacks i know of are somewhat
> labour- and resource-intensive on the spammers, so i think it 
> might be worth a shot.

The method used to defeat that technique has been to have the bot pass the
type-in-the-letter image through to a pron site. Users at the pron site type
in the keyword in order to see the next image. Then the bot takes the
results back to complete the challenge at the first site.

Insidiously clever, co-opting humans to do the jobs which are too difficult
for the computer!

-- kurt