SEOMoz points to an interesting study on form design. The study suggests that the convention of labels on the left with the entry box on the right is not as effective as a non-bolded label on the line above the input field. Many Drupal themes already do this pretty well but it is good to keep in mind. Many hours have gone into trying to get it "right" when we were chasing the wrong answer.
by Joshua Brauer on November 24, 2006