<http://schema.org/description>
"When using Google AdWords, Facebook ads or other forms of paid online advertising; it\u2019s important to make use of landing pages to create one cohesive experience from your ads to your ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/dd/2014/05/21/landing-pages-101/>