<http://schema.org/description>
"Yesterday I reported that Google says using keyword rich user names in comments can be considered spammy and against Google's policies, potentially being a link scheme.  Of course that caused for a lo"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/googleguy-spam-matt-cutts-17680.html>