A & B. The history of the <blink> tag. A & B. The history of the <blink> tag. A &amp; B. The history of the &lt;blink> tag. And a <a href="http://www.example.com/">link</a>. <div xmlns="http://www.w3.org/1999/xhtml">History of the <blink> tag</div> A & B. The history of the <blink> tag. This one is actually invalid in Atom 1.0. title with type=text/plain. This is not valid in Atom 1.0, where type must be one of text|html|xhtml. So libsyndication does not parse it for now. If this becomes a problem with real-world feeds, we might parse less strict in future. RXhhbXBsZSA8Yj5BdG9tPC9iPg== Invalid. base64-encoded title with type=application/octet-stream. Types other than text, html, xhtml are invalid in Atom 1.0.