An astro link on lunar phases:
http://starcats.com/lunar.html
I think of the sun and moon as the sympathetic and parasympathetic nervous systems respectively and both as needs. The sun shows the needs for vitality, stimulation, at an extreme, fight or flight. The moon shows the needs for security, relaxation, "lie down and be fed".
I consider problems w/the moon more severe than problems w/the sun b/c as it has been pointed out, the moon is very primal and instinctual.
I've got a balsamic moon in my chart, 11th, 12th house, so that's a PROPHET phase in this thread. Gauging by other people's behaviours, it is very easy for me to let important things go, even things like important relationships or values etc if I see fit. I also don't accumulate material things like most people. If I could describe this phase in conjunction with the houses implicated, it is that most people seem to view their development as building, as cumulative, whereas I see my "growth" in more destructive terms - you strip away more and more of yourself, more of what is unnecessary. Other people tend to be hard on the outside, but peel away their defenses and they become vulnerable, more soft. I feel like the opposite - the deeper in you go, the harder it gets and the more it is required of me to strip away another layer.