"Whom" is correct since there is no verb associated with it. "Who" needs a verb. That said, the title should read:
For Just Whom is this Divorce Good
invert the sentence and replace "who" with "him" or "he"
"Divorce is good for he" ?
"Divorce is good for him" ?
who = he
whom = him
Works every time.
Thank you....
http://www.getitwriteonline.com/archive/022703.htm
"On the subject of ending sentences with prepositions, people often recount a story involving Winston Churchill. When an editor dared to change a sentence of Churchill's that appeared to end inappropriately with a preposition, Churchill responded by writing to the editor, 'This is the kind of impertinence up with which I shall not put.'
His purpose, of course, was to illustrate the awkwardness that can result from rigid adherence to the notion that prepositions at the end of sentences are always incorrect."