Let’s try this again..
I agree with Dr. Isis that comparing the Facebook research study with the Tuskegee experiment is bananas. I understand people being upset by the lack of informed consent, but an IRB in this case would consider the degree of potential harm that could be done, e.g. dying of tuberculosis versus reading a sad text on your timeline. That is what would be considered “minimal risk,” and in some cases informed consent is not considered absolutely necessary. Facebook manipulates us all the time so I’m not sure this has done any more harm that the usual soul destroying that goes on. Certainly human subjects issues are worth discussing..