In one of my other posts, Singular vs Plural WordPress Custom Post Type Permalink, I am displaying some URLs on their own line as part of the content.
However, the WordPress oEmbed functionality tries to turn URLs on their own line into a rich content preview (e.g. a YouTube URL alone on a line creates an embedded video). This includes turning a link to a page on another WordPress site into a content preview. This resulted in my post turning
The original markup I was using (that resulted in the WordPress content preview replacing the URL) was
<pre><code># plural http://ferrarello.com/recipes/guacamole #singular http://ferrarello.com/recipe/guacamole </code></pre>
I was able to prevent WordPress from turning the URLs into rich content by wrapping the URLs in
<span> HTML tags.
<pre><code># plural <span>http://ferrarello.com/recipes/guacamole</span> #singular <span>http://ferrarello.com/recipe/guacamole</span> </code></pre>