Ghost-tweeting: An ethical quandary in a Web 2.0 world When does ‘on behalf of’ cross the thin, wavy line into ‘under false pretenses’? By Ragan StaffFeb. 24, 2010 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.