http://www.slideshare.net/randfish/10-steps-to-great-seo-infusioncon-2011
die schönsten daraus:
http://www.seomoz.org/blog/dispelling-a-persistent-rel-canonical-myth
http://www.seomoz.org/blog/understanding-root-domains-subdomains-vs-subfolders-microsites
http://www.seomoz.org/blog/duplicate-content-block-redirect-or-canonical
http://www.seomoz.org/blog/11-best-practices-for-urls