If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
More grist for the hypothetical Journal of Negative Results
Scientist wants to publish replication failure. Nature won't accept the article (even as a letter). So scientist retracts previous letter written in support of the non-replicated study.
Hypothetical?
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.