Revelations about the Facebook Emotional Contagion study highlights what key ethical consideration to conducting research using social media?

Research using social media does not consider the ethical principal of justice.

Publicly available information on social media sites are not covered in the federal regulations.

Users of social media sites, like Facebook, may not fully understand all of the terms to which they are agreeing to when accepting a sites$$ terms of use.

Participants who use social media have expectations of privacy that may be at odds with the reality that their data is available publicly.