David (version 1)
I'm David Fifield.
I think the GNU Go page should call GNU Go "free software," but I don't want to make a bug fuss about it. Here's what I wrote in Messages to People Currently Present in the Library:
The terms " free software" and " open-source software" mean approximately the same thing; see http://www.gnu.org/philosophy/free-software-for-freedom.html. The important thing to remember is that the "free" in "free software" means freedom, not price (free software is not necessarily non-commercial software; see http://www.gnu.org/philosophy/selling.html).
Because GNU Go is part of the GNU Project, which always uses "free" to describe its software, I suggest that the GNU Go page should too. If the authors of that page (Frs mainly, I guess) insist on calling it "open-source", please at least hyphenate the term when it's used as an adjective (see the note about usage at the bottom of http://www.tuxedo.org/~esr/open-source.html).
If you wish, you can leave messages discussing this matter here, or email me at email@example.com.