I’ve just completed a second, and very much larger, article all about the honorific title Mx or Mix:
About Mx, with Miss, Mrs, Mr, Ms,
and the singular they
Mx is a non-binary transgender title I’ve been using for myself since 2002.
The new article is much too long to fit in a single blog post so it’s online as an ordinary web page at
http://www.mixmargaret.com/about-mx-with-miss-mrs-mr-ms-and-the-singular-they.html
with a separate page holding five appendices (all well worth a read) at
http://www.mixmargaret.com/about-mx-five-appendices-to-mix-article.html