All search engines consider links regardless of the attribute attached to that link. The no follow tag was created to actually mark "advertising" links for the search engines to know the links was there for advertising purposes.
No matter what any expert tells you, you should have do follow and no follow links both. Personally I do not worry about if links are do follow or not. I participate on sites that I feel are a benefit to myself and my business.
Article Marketing Tools The Most Powerful Internet Marketing Tools Website You Have Ever Seen! Even The Gurus Can Not Match The Power Of Article Productions! Phone: 724-531-1968 | How I Outranked A Top Guru For His Own Keywords - Free Report!