Bug: https://bugzilla.wikimedia.org/show_bug.cgi?id=41672
Docs and space for further discussion: https://www.mediawiki.org/wiki/Personal_tools
This is yet another question which begs for a copy guide to be filled out at https://www.mediawiki.org/wiki/Wikimedia_Foundation_Design/Writing_style. I really love the "copy tone" and "copy rules" lists at https://www.mozilla.org/en-US/styleguide/ for a relevant example of what we might shoot for.