Kelli Russell Agodon has posted Marvin Bell's "32 Statements About Poetry".
#8 struck me: "Try to write poems at least one person in the room will hate." I guess the advice here is to put ugly stuff in the poem, stuff you know some reader will loathe. Fact is, of course, it takes no effort to produce something someone will hate. Soon's you've put a word on paper someone will scorn it.