This article reports on how some scientists impersonate outside reviewers for journals and give high marks to their own manuscripts. Scientists appear to have figured out a new way to avoid any bad prepublication reviews that dissuade journals from publishing their articles: Write positive reviews themselves, under other people's names. In incidents involving four scientists--the latest case coming to light two weeks ago--journal editors say authors got to critique their own papers by suggesting reviewers with contact e-mails that actually went to themselves. According to Irene Hames, a member of the Committee on Publication Ethics, Blame lies with those journals that allow authors to nominate their own reviewers and do not check credentials and contacts.