I was baffled as I came across certain blogs where links were n0-follow by default, yet within all those n0-follow comments there would be one or two links in the comments which were painted blue by firefox n0-d0 follo-w . So I looked in the source and it was like this <a href="http://SPAMMERS-WEBSITE.com" rel="d0-follow" rel="n0-follow">ANCHOR TEXT</a> Those sneaky buggers tried to override the n0-follow by putting rel=d0-follow in the link. I know that rel="d0follow" is meaningless, it just doesn't exist, so I decided to drop my own link but instead replace it with rel="shitface" , and lo and behold, the link is colored blue (d0-follow!) My question is, is this just a bug in firefox d0-follow plugin, or does having a rel="XXXX" command BEFORE the rel="n0-follow" 'cancel' out the n0-follow? Someone please tell me this is the case, but surely it can't be that easy? Common sense leads me to believe that these links are still n0-follow because G will ignore those nonsense rel="smellyfart" commands, but I just gotta check, ya know?