I've resisted the stupid nofollow "solution" that Google offered to help clean up the mess they made by paying spammers for crapping on blogs. It breaks the internet by invalidating links. But, after finding my blog on one to many "PR6 NOFOLLOW" forums as being a juicy target for spam, I've had enough. Nofollow is now used on my blog for all links in comments. Thanks, spamasses.