(click for larger image)
This has all happened to us at one time or another. We have deployed a website and have forgotten to validate the tags. When we visit the website live, we find the above junk printed. It is actually the tag code that wasn't interpreted but rather rendered as text due to a missing element.
One of the easiest ways to avoid website validation errors is to go to the following URL:
and enter the URL. It will identify any tag errors.
I am just amazed that a large organization like CNN who lives and dies by their online presence would make such newbie mistakes.