http://xmlns.com/foaf/0.1/

used by 20:

• aksworg
• artenuevosmedios-gnoss
• gnoss
• gnoss-com-a-social-and-semantic-platform
• green-competitiveness-gnoss
• ineverycrea
• ineverycrea-argentina
• iso-3166-2-data
• miguiadeviajes-gnoss
• naturopathy2
• nextweb-gnoss
• open-data-risp
• portal-turismo-de-la-rioja
• productontology
• prospects-and-trends-gnoss
• proyectoapadrina
• red-uno-internacional-santillana
• southampton-ac-uk-profile
• statusnet-ssweeny-net
• totl-xkcd