Use this markup to add Google+ comments to your blog/whatever. Oh, and don't forget to put the width and url in there.

gplus-comments.html

<div class="g-comments"
 data-href="{put-your-url-here}"
 data-width="{put-your-container-width-here}"
 data-first_party_property="BLOGGER"
 data-view_type="FILTERED_POSTMOD"
></div>

<script type="text/javascript">
(function() {
 var gp = document.createElement('script'); gp.type = 'text/javascript'; gp.async = true;
 gp.src = 'https://apis.google.com/js/plusone.js';
 var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(gp, s);
})();
</script>