Ars Technica passes on word from CNet that various search engine vendors and blogging tool providers (including heavyweights SixApart) are implementing a new plan to limit comment spam by reducing the value of comment spam for search engine placement. Signifying Nothing has already followed suit, although since trackback spam has been less of a problem for us I’m only applying the “fix” (a simple attribute on HTML a
tags) to user comments for now.