I sent a PoCo request to Google's endpoint:
http://www-opensocial.googleusercontent.com/api/people
Google's endpoint replied with this XML document:
<?xml version="1.0" encoding="UTF-8"?><response
xmlns="http://ns.opensocial.org/2008/opensocial">
<person xmlns="http://ns.opensocial.org/2008/opensocial">
<displayName>Clark Kent</displayName>
<emails>
<type>CUSTOM</type>
<value>clar...@xyz.com</value>
</emails>
<id>5555555555</id>
<name>
<familyName>Kent</familyName>
<givenName>Clark</givenName>
</name>
<nickname>Clark Kent</nickname>
</person>
</response>
The <person> element is not part of the PoCo spec. According to the
spec, the element name should be <entry>