Links are still believed to be the most important part of the algorithm approximately 40%. Keyword usage on the page is still fundamental, and other than links is thought to be the most important type of factor. SEOs do not think social factors are important in the 2013 algorithm only 7%, in contrast to the high correlations. Moz 2013 Ranking Factors - Matt Peters MozCon from mattthemathmanvia 2013 Search Engine Ranking Factors - Moz.