Perhaps of interest to the odd person who writes e-letters. James Coyne is a distinguished, but renegade, psychologist. He explains why he has decided not to agree to the change(s) to this BMJ Rapid Response (e-letter) submission suggested by Sharon of the BMJ:
Note that only people who have one or more entries in PubMed can make posts in PubMed Commons. However, one letter to the editor can be sufficient.
http://jcoynester.wordpress.com/2014/03/30/bmj-rapid-responses-pubmed-commons-and-blogging/
BMJ Rapid Responses, PubMed Commons, and Blogging
Why I said no to revising my submission to BMJ Rapid Response
Note that only people who have one or more entries in PubMed can make posts in PubMed Commons. However, one letter to the editor can be sufficient.