It’s a really neat idea and could be quite a good addition to the site(but bear with me here, please) however, I think that the expression of passions is so universal to what we do here as writers, that it really ends up crossing over into all of the sections of the site and it would be very hard to specifically label one thing or another as fitting into that subject area. Mind you, on the other hand, the author would have control over just where things ended up, so I imagine it’s a moot point as to whatever crosses over or where things fit.