An internal September 2018 Facebook memo found ~40% of traffic to Pages went to those with plagiarized or recycled content (Wall Street Journal)

Wall Street Journal:
An internal September 2018 Facebook memo found ~40% of traffic to Pages went to those with plagiarized or recycled content  —  About 40% of traffic to pages in 2018 went to those with content that was plagiarized or recycled, and Facebook has been slow to crack down on copyright infringement

source http://www.techmeme.com/211109/p42#a211109p42