Yes! Finally a sensible solution to stop the comment and referer spammers getting their google-juice.

That took, like, a day? It's cool when an idea can go from an idea to being implemented that fast. I downloaded the plugin from MoveableType this evening and now all my comments are "nofollow'ed".

I guess it'll take a while for all the spam to taper off, but if most of the A-list bloggers implement the tag, maybe they'll give up...