ok, i'm 2/3 done w/a captcha class.  i'll post it tomorrow, but i don't
know if i can get it widgetized.  maybe somone can help with that.

the general idea is:

it requires PIL and freetype. Its modeled after
http://svn.navi.cx/misc/trunk/pycaptcha/  , but trying to push it
closer to the google captcha system (which i hear is pretty strong )
i've been using pwntcha as a guide ( http://sam.zoy.org/pwntcha/ )

instead of storing anything in the server, it generates an md5 of the
captcha text + a site secret , and provides that to be displayed on the
page as a hidden element.  validate the captcha and the md5 will match.
 hooray.


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