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Another idea - Hashcash (Score:1)

by DAxelrod (4649) on 2007.02.06 20:42 (#53077) Journal

DVD John's blog [nanocrew.net] uses WP-Hashcash [elliottback.com] which is another interesting idea adapted from email spam ideas. I don't know how it degrades for those who don't have Javascript, though.

Basically, submitting a comment requires your browser to devote a certain number of processor cycles to calculating something that is quickly verifiable by the server [hashcash.org].

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