The truth is that the authors of this study did not intend to examine the effectiveness of e-cigarettes for smoking cessation. They have in fact explicitly stated that their results cannot and should not be used to draw conclusions about the effectiveness of e-cigarettes.

The paper defends its ethical standards by arguing that it "was consistent with Facebook's Data Use Policy, to which all users agree prior to creating an account on Facebook, constituting informed consent for this research."

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