You test with "he" versus "him" in the reply to the question, not by replacing "...

		ralph on Aug 13, 2010 \| parent \| context \| favorite \| on: Dear people-who-run-Twitter, whom to follow, whom You test with "he" versus "him" in the reply to the question, not by replacing "who/whom" in the question itself. So the answer to "whom to follow" is "follow him", not "follow he".