I have some experience with SEO and have recently began a quest to get our website to the coveted #1 position on google for several different local keywords. I have been having alot of success but one thing that I am unsure about is how much High PR Nofollow links help. I try to avoid them, but if I end up at a high pr blog and it wont take long to leave a comment to generate one, I go ahead. Ive read a few posts on this and it appears that everyone just assumes they are worthless.. Does anyone have some factual data to support this assumption?!