Comments

When getting comments, it is important to be explicit about approved and spam status:

{% for comment in hifi.get({'type':'comment','isSpam':false,'isApproved':true}) %}
  {{ comment.author }}
{% endfor %}

Comments are children of the page they are on:

{% for comment in hifi.get({'type':'comment','isSpam':false,'isApproved':true,'parent':this.id}) %}
  {{ comment.author }}
{% endfor %}