Идеята е да се ползва системата за коментари на facebook:

1. Създава се приложение за коментари:

http://www.facebook.com/developers/createapp.php

App Display Name: example_comments

App Domain:example.com

Website-> Site URL: http://example.com

http://developers.facebook.com/tools/comments?id=191130727657303

2. Взима се кода

http://developers.facebook.com/docs/reference/plugins/comments/

<div id='fb-root'></div>
<script>(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = '//connect.facebook.net/bg_BG/all.js#xfbml=1&appId=365185030181491';
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));</script>

<div class='fb-comments' data-href='http://firmi1.com' data-num-posts='2' data-width='640'></div>

3. Слага се и друг код

<meta property='fb:admins' content='100000589059407' />
<meta property='fb:app_id' content='365185030181433' />

$url="http://example.com/haha/url";
echo "
<br><br><b>Коментирай свободно:</b>
<br><br>";
get_facebook_comment($url,510);