Strengthen existing tier 1 guest posts with measured social signals, tier 2...

https://www.mediafire.com/file/o7o2bbqow40djie/pdf-1357-67576.pdf/file

Strengthen existing tier 1 guest posts with measured social signals, tier 2 links, click-through and clickstream activity, and relevant referral traffic. The goal is to support pages already earning links, not simply add more placements