<http://schema.org/description>
"Cynthia at Google Groups must be a new FeedBurner user.  After all, Feedburner has seen regular drops in subscriber count (maybe once or twice a month) and even ran into a zero subscriber count issue "^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/archives/018534.html>