How to: Install Disqus to your Ghost blog posts.

The Best Tool to Build an Audience for Your Ghost Blog- Disqus

Luckily this only requires a few cut and paste steps to get up and running

Pre-Requisites:-
1. You need access to current theme's directory. for example yourghostdir/content/themes/casper/

Firstly access your themes directory at
yourghostdir/content/themes/casper

Second, Locate the File named post.hbs

Paste the following code between {{/post}} and **</article>

<div id="disqus_thread"></div>`  
<script type="text/javascript">  
    var disqus_shortname = 'EXAMPLE'; // required: replace example with your forum shortname
    var disqus_identifier = '{{post.id}}';

    /* * * DON'T EDIT BELOW THIS LINE * * */
    (function() {
        var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
        dsq.src = '//' + disqus_shortname + '.disqus.com/embed.js';
        (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq);
    })();
</script>  
<noscript>Please enable JavaScript to view the <a href="http://disqus.com/?ref_noscript">comments powered by Disqus.</a></noscript>  
<a href="http://disqus.com" class="dsq-brlink">comments powered by <span class="logo-disqus">Disqus</span></a>  

IMPORTANT: Replace EXAMPLE with your Disqus forum shortname

Finally........ RESTART GHOST
service ghost restart

This post is just a share of Disqus's instructions on their website here https://help.disqus.com/customer/portal/articles/1454924-ghost-installation-instructions
This is the exact information I used in order to install Disqus to this blog.
The Link will also show you how to add comment count features.

Dont forget to like and share to help the community out.

All the Best- Peace Out

Jason