From Slate.com, this Robert Pinsky FAQ about unrhymed poetry, difficult poetry, free verse, Emily Dickinson, and more. I recommend it, partially for the Wallace Stevens appearance, but especially for the final question -- perhaps not coincidentally number nine:
9. Well, I like poetry that is amusing, that maybe makes me chuckle a little. I'd rather read something reassuring and light than something complicated or gloomy. Is that bad? Does that mean I am a jerk?