I'm probably not in the right demographic for this movie. Although I am gay, I am not an American Indian, and this movie depends heavily on an appreciation of their culture, their history and (if this movie is at all authentic) their overwhelming love of melodrama.
Not a single word in the very stilted and contrived screenplay sounded to me like an actual human being talking, but like a person reading a proclamation about something very profound. The many poetry readings, funeral speeches, etc - even ordinary conversations between lovers and friends - sound so forced and pretentious that they're nearly unbearable. That's probably because the movie was written by a poet about himself. When the same poet also directs the movie, the combination practically guarantees a mediocre result.
Very, very few successful movies are written and directed by people whose subject is their own lives and whose primary interest is in poetry rather than in movie-making. In fact, I can't think of a single one.
If Sherman Alexie had allowed someone else to write and direct his story, it might have worked very well, because it's not an uninteresting story - but this movie doesn't work at all, not for me. It's too unnatural, and Native Americans ought to be MORE natural than the rest of us, not less.
If you have a soft spot for overblown melodrama, stilted dialog, declamatory acting and/or Native Americans, then The Business of Fancydancing may be just right for you. But if you're looking for a good movie, keep looking.