<http://schema.org/description>
"How many address books do you have? Personally, just with Google accounts, I have three and they are also synchronized to my Android device. Almost every entry that I have is incomplete, ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2011/05/28/rainmaker-completes-your-contacts-with-a-single-mouse-click-30k-api-contest/>