The Redirect Method sounds like it may be one of Jigsaw's projects. Jigsaw recently got some bad press you may find interesting.[0]
Also, there was a similar experiment done in targeted ads on Facebook not too long ago.[1]
[0] https://www.vice.com/en_us/article/vb98pb/google-jigsaw-beca...
[1] https://www.thedailybeast.com/inside-the-secret-facebook-war...