Distributed Social Whitelists \\Sam blogs about his wiki spam problems  and implements a posting throttle.\\With new spam-capable zombie PCs and with wikis that aren't updated very often\this isn't a solution.  If I were to go back to my wiki after a month it would\be covered with spam links.\\One strong solution is emergent and distributed social whitelists (AKA my\FOAFKey  proposal).\\With a FOAFKey enabled wiki/weblog you could allow a whitelist of a few hundred\thousand users to post to the wiki without any problems.  All they would need to\enter is their email address for confirmation (or the SHA1 hash of their email).\\For the rare times when the user isn't within the original whitelist we can just\have the user uplo ...\\