norman.walsh.name: Comments on /2004/02/10/refspamhttp://norman.walsh.name/2004/02/10/refspam/comments.atom2012-05-22T18:18:34.703323ZComment 1 on /2004/02/10/refspamhttp://norman.walsh.name/2010/09/25/oauth#comment00012004-02-11T14:23:19Z2004-02-11T14:23:19ZPaul Downeyda39a3ee5e6b4b0d3255bfef95601890afd80709

MovableType now:

- throttles comments from the same IP address

- automatically bans an IP address based on an abnormal number of comments in a short period of time

- uses redirects when linking to URLs given in comments to defeat the PageRank boost given to spammers

might be worth implementing something similar?

Comment 2 on /2004/02/10/refspamhttp://norman.walsh.name/2010/09/25/oauth#comment00022004-02-11T14:50:38Z2004-02-11T14:50:38ZDanny Ayersda39a3ee5e6b4b0d3255bfef95601890afd80709

It's been known to the blogosphere a while now, see Wired:

http://www.wired.com/news/culture/0,1284,56017,00.html