In today's world we need to call out people who do the job for these spy machines. Developers working for Google & Facebook should be ashamed of themselves. Money talks, I guess.
"...education sites are competing with very powerful algorithms that are designed to keep users watching video after video. If youtube starts encouraging users to do a few Khan Academy problems before watching the next video, I will consider our project, DnsLearning.org, a total success"
It's an oversimplification to demonize groups in this way. What is more troubling is the (non)reaction of society to the vast encroachment on privacy and rights from all sides, not the least of which are governments, telecommunication companies, and advertisers.