[extropy-chat] Blog spam

[Brian Atkins]

The messed up images are a form of CAPTCHA (an acronym.. look it up).

Yes, your idea of farming them out in realtime to humans has been done... is 
being done likely. Mostly to low paid Indians and Chinese, but also porn sites 
have done it - required customers to decode one or more of them in order to 
access the site for "free".
-- 
Brian Atkins
Singularity Institute for Artificial Intelligence
http://www.singinst.org/