"Big-Data Scientists Face Ethical Challenges After Facebook Study" By Paul Voosen from http://chronicle.com/article/Big-Data-Scientists-Face/150871/
"Jeffrey Hancock, a Cornell U. professor who teamed up with Facebook on a controversial study of emotion online, says the experience has led him to think about how to continue such collaborations “in ways that users feel protected, that academics feel protected, and industry feels protected.”
Last summer the technologists discovered how unaware everyone else was of this new world.
After Facebook, in collaboration with two academics, published a study showing how positive or negative language spreads among its users, a viral storm erupted. Facebook "controls emotions," headlines yelled. Jeffrey T. Hancock, a Cornell University professor of communications and information science who collaborated with Facebook, drew harsh scrutiny. The study was the most shared scientific article of the year on social media. Some critics called for a government investigation.
Much of the heat was fed by hype, mistakes, and underreporting. But the experiment also revealed problems for computational social science that remain unresolved. Several months after the study’s publication, Mr. Hancock broke a media silence and told The New York Times that he would like to help the scientific world address those problems"