Nofollow | SEO & Dynamic Linking | Disclosure

Here are some more links discussing the use of NoFollow for SEO purposes.

Seo Blog has a solid overview of how each search engine treats nofollow.
I am not sure the final conclusion regarding Yahoo and treating nofollow for ranking purposes is correct. I know many people who have done well with blog comments with Yahoo search, even on blogs using nofollow. I haven’t got any recent data.