Rapid responses are electronic comments to the editor. They enable our users to debate issues raised in articles published on bmj.com. A rapid response is first posted online. If you need the URL (web address) of an individual response, simply click on the response headline and copy the URL from the browser window. A proportion of responses will, after editing, be published online and in the print journal as letters, which are indexed in PubMed. Rapid responses are not indexed in PubMed and they are not journal articles. The BMJ reserves the right to remove responses which are being wilfully misrepresented as published articles.
The REF not only encourages "tweaking" of results, but also incentivises misattribution of authorship. If a junior researcher doesn't have enough papers to submit to the REF, pressure might be put on her colleagues to add her name to some of their papers so that she can enter them into the REF. The practice of "guest" authorship is research fraud, but the REF encourages it.