Interesting study from +Eric Enge and the +Stone Temple Consulting team on how engagement on Facebook could influence the indexation of pages and posts on Facebook in Google's SERPs.

The following are the conclusions from the study:

1. Clearly Google does not use the Like data.
2. Our Attempt to Directly Measure Indexing and Ranking of Facebook Shared Links Was Inconclusive.
3. Google Can See Who Your Friends are if They Want to.
4. Google Does not Index All Shares on Prominent Profiles.
5. Query Deserves Freshness Behavior is Not in Evidence.

Untuk melihat Study review yang sudah dilakukan. silakan merujuk ke http://www.stonetemple.com/does-facebook-activity-impact-seo/