Just a tip to all in this thread:

Be very careful when implementing the "nofollow" attribute. A large and famous Australian SEO company advised one of my customers to use it and they were screwed up.

Playing with that attribute not being very sure when and where to use it, you are playing with the fire.

Good luck.

__________________
"Being an expert isn't telling other people what you know. It's understanding what questions to ask, and flexibly applying your knowledge to the specific situation at hand. Being an expert means providing sensible, highly contextual direction." Jeff Atwood
SEO Workers - Search Engine Optimization Consulting Company | SEO Analysis Tool | Webnauts Net SEO