Google Social Media Ranking Factors
1. Number of Tweets: Like links, the tweets a page has may influence its rank in Google.
2. Authority of Twitter Users Accounts: It’s likely that Tweets coming from aged, authority Twitter profiles with a ton of followers (like Justin Bieber) have more of an effect than tweets from new, low-influence accounts.
3. Number of Facebook Likes: Although Google can’t see most Facebook accounts, it’s likely they consider the number of Facebook likes a page receives as a weak ranking signal.
4. Facebook Shares: Facebook shares — because they’re more similar to a backlink — may have a stronger influence than Facebook likes.
5. Authority of Facebook User Accounts: As with Twitter, Facebook shares and likes coming from popular Facebook pages may pass more weight.
6. Pinterest Pins: Pinterest is an insanely popular social media account with lots of public data. It’s probably that Google considers Pinterest Pins a social signal.
7. Votes on Social Sharing Sites: It’s possible that Google uses shares at sites like Reddit, Stumbleupon and Digg as another type of social signal.
8. Number of Google+1’s: Although Matt Cutts gone on the record as saying Google+ has “no direct effect” on rankings, it’s hard to believe that they’d ignore their own social network.
9. Authority of Google+ User Accounts: It’s logical that Google would weigh +1’s coming from authoritative accounts more than from accounts without many followers.
10. Known Authorship: In February 2013, Google CEO Eric Schmidt famously claimed:
“Within search results, information tied to verified online profiles will be ranked higher than content without such verification, which will result in most users naturally clicking on the top (verified) results.”
Although the Google+ authorship program has been shut down, it’s likely Google uses some form of authorship to determine influential content producers online (and give them a boost in rankings).
11. Social Signal Relevancy: Google probably uses relevancy information from the account sharing the content and the text surrounding the link.
12. Site Level Social Signals: Site-wide social signals may increase a site’s overall authority, which will increase search visibility for all of its pages.