<a href="https://en.wikipedia.org/wiki/Cambridge_Analytica" class="extiw" title="w:Cambridge Analytica">Cambridge Analytica</a> and <a href="https://en.wikipedia.org/wiki/Facebook" class="extiw" title="w:Facebook">Facebook</a> partnered together in the 2010's to gather information from users based on surveys they took, which was meant to be used in academia.
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