Last week, Aaron Wall had a guest post on Search Engine Land that originally had the headline "How To Buy A #1 Organic Search Ranking On Google." Aaron has been doing so many anti-Google posts since around July that other people started to notice several
J. Griesbaum, B. Bekavac, und M. Rittberger. Handbuch Internet-Suchmaschinen: Nutzerorientierung in Wissenschaft und Praxis, Seite 18-52. Akademische Verlagsgesellschaft AKA, (2009)