https://www.vox.com/recode/22761598/facebook-facial-recognition-meta
https://www.datasciencecentral.com/profiles/blogs/importance-of-metadata-in-a-big-data-world
Its all still a Big Data FB mining party.
https://www.sciencedirect.com/science/article/pii/S2351978920306247
https://pediaa.com/what-is-the-difference-between-big-data-and-metadata/
https://ecmapping.com/2018/04/18/big-data-vs-metadata-the-difference-that-changes-everything/