<http://schema.org/description>
"We have Google's Blog Search and Technorati for blog search, but has anyone found a reputable forum search engine?  Enter Twing.  Twing allows you to search and discover forum discussion.  We do that "^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/archives/016641.html>