Fix Missing Disqus Comment Form

I had a bit of trouble with Disqus where it would only display a link saying “Discuss this topic on Disqus” instead of displaying an actual comment form. It turns out that this problem was caused by a mismatch between the URL configured in Disqus and the url where my blog was actually accessible. So if you’re missing a Disqus comment form, make sure that the URL listed under Settings -> Website URL in Disqus is the actual URL where your site resides.