captchas in dpub?

The accessibility task force was wondering about the applicability of
CAPTCHA to digital publishing, and none of us could come up with use cases
for CAPTCHAs in digital publishing. As accessibility folks, of course, we
all want to say that CAPTCHAs are totally irrelevant to digital publishing
because nobody is using them. :)

Realistically, however, do any of you know of any real life or potential
reasonable use cases for captcha in digital publishing?

Deborah
-- 

Deborah Kaplan

Support Engineer

Safari

safaribooksonline.com

office: 617.235.5840

33 Farnsworth Street, 4th Floor, Boston, MA 02210