Cool. The (Metaethics Sequence)[http://wiki.lesswrong.com/wiki/Metaethics_sequence] is useful for some of those things.

I have to admit that, for myself, I remain unconvinced that there is an objective truth to be had regarding "what should I want". Partly because I'm unconvinced that "I" is a coherent unitary thing at any given timepoint, let alone over time. And partly because I don't see how to distinguish "preferences" from "tendencies" without resorting to unmeasurable guesses about qualia and consciousness.