author — Gives name and contact information for originating party of the associated data
author includes alternate means of identifying author using XNS or normal e-mail/address. The address sub-element is to be replaced with the more complete contactInfo sub-element.
Both the xns and email attributes are deprecated and will be removed. XNS was a proposed Internet technology (eXtensible Name Service) to reduce spam that didn't catch on. It is replaced with the 'iname' sub-element as a single means to identify an individual or corporation in lieu of typical (and quickly dated) e-mail, phone, or address information. The address element itself is deprecated and should be replaced with the contactInfo element
2011-01-06