In my eyes there are only 7 basic factors. All of them are a compilation of “second level” factors and / or build by addition of many single signals.
Backlinks
Content
Authority
Trust
Reviews
Retweets
Facebook Shares
in some cases: Reviews
你可能也喜欢
Google发布中国智能手机使用情况调查报告 […]
Search Engine Optimiza […]
How To Use Flickr R […]
《新媒體.news》｜數據分析：「2015 […]