Captcha module -- add a image-captcha to your forms

note: captcha's are not foolproof, image based captcha's also don't work for the image impaired. 
    caveat emptor.

requirements:
    - PIL - http://www.pythonware.com/products/pil/
    - pycaptcha - http://svn.navi.cx/misc/trunk/pycaptcha

to use:

1. include the urls.py into your main config under '/captcha' 
    -- or change where the templatetag looks for them

2. modify your view so that it calls 'verify' ala:

    urlpatterns += patterns('zilbo.common.captcha.views', 
        (r'^(?P<object_id>\d+)/edit/$','verify', 
            dict( forum_dict, forward_to='zilbo.apps.forum.views.forum.update_forum', 
                    post_save_redirect="/forum/%(slug)s/", login_required=True)),
    )

3. add 
    {% load captcha %}
    {% captcha %}
into your template on the form you want to protect.