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Saturday 10 March 2018 at 05:11
Facebook not only monitors your searching, but it monitors your texts too. I’ve mentioned rare medical conditions in a private text—nothing that I have or would ever be googling—and the very next time I went on FB, the ads were all “How to treat (rare medical condition)!”
Source: http://pinside.com/pinball/forum/topic/big-brother-is-watching#post-4273018