<http://schema.org/description>
"Search engines, especially Google, say don't do 'em. But some search marketers say paid links work. Are paid links subverting search quality? Or are they simply a fact of life, here to stay? We explor"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/archives/014573.html>