As the CTO of Nature Publishing Group, I have become involved in a very lively conversation with Microsoft staff about why Word 2007 is not being actively endorsed by STM publishers. It has recently come to Microsoft’s attention (see blogs Murray Sargent and Brian Jones) that Nature ( http://www.nature.com/nature/authors/submissions/template/index.html ), Science ( http://www.sciencemag.org/about/authors/prep/docx.dtl), and many other scholarly publishers do not accept files authored in Word 2007. Both Science and NPG have been in correspondence with Microsoft staff on this important issue. The staff there have been very willing to engage in this conversation. As Inera is one of NPG’s main suppliers of Word macros (eXtyles) and a general expert on Word, I asked Bruce Rosenblum of Inera to enter the discussion. The following was sent to Microsoft on 12 June 2007 by Bruce Rosenblum to explain why this situation exists.