https://nerdvittles.com/blogging-with-style/ Ward Mundy's Technobabblelog Thu, 03 Feb 2005 14:47:35 +0000 hourly 1 https://nerdvittles.com/blogging-with-style/comment-page-1/#comment-47 Thu, 03 Feb 2005 14:47:35 +0000 http://nerdvittles.com/?p=18#comment-47 As far as I can tell from reading (as opposed to testing), Hashcash doesn’t do anything to block trackback spam. As I understand the trackback protocol the only way to block it (if it’s accepted at all) is by moderation or automated filtering on the source or content, by blacklist for example. Hashcash works by sticking a magic number in the comment form and checking it (by MD5 hash code generated in a Javascript function) when the form is submitted; adding an extra hurdle that comment spammers would have to jump in order to successfully litter a Hashcash protected site. There is no form required for sending a trackback ping, so Hashcash isn’t invoked. [WM: More great news. I guess I’ll just sit back and wait for the firestorm … and then turn it off. Thx.]

]]> https://nerdvittles.com/blogging-with-style/comment-page-1/#comment-44 Thu, 03 Feb 2005 13:13:47 +0000 http://nerdvittles.com/?p=18#comment-44 I see that your entries have trackback URIs but don’t see any trackbacks. What are you using to block trackback spam?
[WM: Hashcash seems to do the trick. There’s a link to the download in my article.]

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