Lately it keeps happening to me that I try to invite somebody to review a paper and they decline, giving as reason that they have reviewed the paper already for a different journal* and reviewing the paper again would put the authors into a situation of double jeopardy. This got me thinking. Should reviewers really decline for that reason? As reviewer, I've always thought the opposite. For a paper I have reviewed already, if the authors have made a reasonable effort to address my comments and have now chosen a more adequate journal, I can keep my review short and recommend acceptance. Thus, I'm actually preventing a situation of double jeopardy. I keep the authors from facing yet another reviewer with new opinions and requests. So, which is right? Should reviewers recuse themselves if they are asked to review again for a different journal, or should they instead leap at the opportunity and give the authors a break? I'd be interested in your thoughts.
*Where the paper was rejected, presumably.