Well, given your and others' suspicion, I guess such a FAQ entry is warranted. I'm just
surprised, because it's about as justified as a FAQ entry explaining the 'relationship'
between GNOME and Python, or GNOME and GCC, etc. etc.
In other words, the FAQ entry should read:
Q: What is the relationship between GNOME and Mono?
A: No special relationship exists.
There is a very small number of GNOME apps utilizing Mono. The programmers of those apps chose
to use Mono, and GNOME sees no reason to reject their work just because of that, just as we
accept apps into GNOME (if they are worthy) that are written in Python, C, C++, Perl, etc.