I recently reviewed an article. I found weaknesses in assumptions that meant none of the conclusions that were made could actually be made; basically they had absolutely no result.
As such, I gave a detailed review (~ 2000 words) explaining why the assumptions made by the authors were wrong. I was civil and polite throughout, it was not an attack and I tried to remain constructive. I recommended to the editor to reject the paper and, despite recommendations of accept with major revisions from the other two reviewers, the editor rejected the paper. I believe that the authors will take the easy option and just submit to another journal without making serious edits, rather than paying serious attention too my review.
If the paper does get published in (almost) unchanged state, should/could I write some kind of response article? How does one get to do this (should I email the editor with a draft of a response article)?
Should I contact the authors (before they publish, after they publish, or not at all, before or after I contact the editor, before or after I submit/publish a response article)?