Age

Domain age, page age, user account age, and related historical data is sometimes taken into account when determining how much to trust that a particular person, website, page, or document. Generally, older domains are more trusted and therefore deemed more authoritative. However, sometimes search engines, like blog search engines, may boost the relevancy of newer documents.

Sometimes, fresh content may temporarily rank better than you might expect, because of citations from other channels which place the content or article on their home page or a well trusted (high PageRank) page on their site. After those sites publish more content and the referenced page falls deeper into their archives, those links typically become less authoritative causing a drop in rank.

Also see: Supplemental Index [link: ]