Andy Beard spills some of his experience in SEO and with a renewed interest in SEO i’ve decided to bookmark a few of these. The below quote is just a summary.

Rel-nofollow, meta instructions and robots.txt are just tools.

Just because a tool is available to use in your toolbox, doesn’t mean you should use it. You don’t always need to use a big hammer to repair a TV set though sometimes a big hammer just isn’t big enough

This might apply in come cases, so i’m bookmarking it. It’s a video at the Official Google Webmaster Central Blog about removing content from Google.