In other words, the blatant flaw in this study is that it enrolled smokers who had already made quit attempts using e-cigarettes in the past. By definition, this resulted in a sample of smokers who were more resistant to quitting. One would expect to find lower quitting rates among this population of e-cigarette users.

Contrary to the assertion of the authors of this paper, simply being aware that the information one provides to Facebook may be used for research purposes does not constitute informed consent. The fact that users agreed to a Data Use Policy which notes that information may be used for research purposes does not, as the authors state, "[constitute] informed consent for this research."

This is dishonesty in research.

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