Search Ranking Factors Survey 2011

SEOmoz veröffentlich die Umfrage Search Ranking Factors für 2011.

Dazu gibt es einen lesenswerten Blogpost von Rand Fishkin in dem er die Methode und Interpretation der Daten erklärt.

Just as with the social correlation data we released in mid-April (which comes from this same research), please be careful not to confuse correlation and causation. There are plenty of features that are correlated positively or negatively with rankings in Google that are almost certainly not actual parts of Google’s ranking algorithm.