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Rodrigo - Thanks, and thanks for the follow-up. To be honest with you though...I have not seen or experienced anything about this. I tend to follow the suggested rules with code So my answer is "I don't know". Anyone else know? I also agree with you on the meta tags. Robots.txt is best used for disallowing folders and such, not pages. For instance, I might do a "Disallow: /admin" in the robots.txt file, but would never block a category page or something to that effect. If I wanted to remove it from the index, I'd also use the meta "noindex,follow" attribute. Good point!

Thanks man, I think this might be the video you are referring to: http://www.seomoz.org/blog/whiteboard-interview-googles-matt-cutts-on-redirects-trust-more