Suggest clarification to the title and description of fields on the settings form:

  $form['type_name'] = array(
    '#type' => 'select',
    '#options' => node_get_types('names'),
    '#default_value' => 'profile',
    '#title' => t('Content type'),
    '#description' => t('The content type to use for some or all of the profile fields. See the description below the next field for more details.'),
  );
  $form['method'] = array(
    '#type' => 'select',
    '#options' => array('fieldgroup' => t('Fieldgroup'), 'type' => t('Content type')),
    '#default_value' => 'fieldgroup',
    '#title' => t('Treat each profile category as a'),
    '#description' => t('Fieldgroup: treat each category as a fieldgroup on the content type selected above; Content type: use the above content type for the first profile category and then create a new content type for each additional category, each with the fields used in that category. The "first" profile category is determined based on sort order by category name.'),
  );