Then the reader should display that as text, and not try to parse it. Assuming that's actually the textual content of the <title> element, which would then be s

Then the reader should display that as text, and not try to parse it. Assuming that's actually the textual content of the <title> element, which would then be serialized <title><![CDATA[</title><script src=...]]></title> or <title></title><script src=...</title>. If the markup reads <title></title><script src=...</title>, that would probably mean you've got a buggy feed generator constructing the markup by hand instead of using an XML serializer. Based on the how I understand the RSS spec, a feed could possibly contain <title><![CDATA[<i>Title</i>]]></title> and expect the title to be italic, but in Atom it would have to be <title type="html"><![CDATA[<i>Title</i>]]></title> to render as italic, otherwise the "<i>Title</i>" would be written out literally by a compliant reader.