Another line of defense against comment spam
Google has taken steps against the comment spammers, making it possible to have GoogleBot (and others) pretty much ignore specific links by adding rel=“nofollow” to the link tag.
The added bonus
A great side effect of this is that it’s now possible to link to someone you don’t particularly like, without boosting their page rank. I suspect we’ll see more links to competitors, ripped off layouts, and generally misbehaving companies in the future because of this.
And there was much rejoicing?
So now comment spam is gone? No more getting hammered with a gazillion irrelevant comments linking to 100 sites all detailing the latest progress in abnormal sexual endavours? No chance in hell.
Comment spammers are going to keep at it. Sure, they won’t have the Google Juice carrot dangling in front of them, but that hasn’t stopped the email spammers, has it? Their links and ads will still show up on the web for people to see and click, even if search engines ignore them. Don’t uninstall all those other comment-spam countermeasures just yet. This is merely another drop in the ocean of combatting spammers.
Naturally, this gets blogged about all over: