http://www.w3.org/ns/prov#value | - You will find many useful options, such as professional profiles, user wall with comments and graffiti, privacy settings for user profiles, guestbook, direct links to profiles, email & OpenID login, Facebook & Twitter data sharing, virtual currency, points & virtual gifts, promo codes, abuse reports, google xml sitemap, tags & tag clouds, 7 types of searches, targeting in search, galleries (YouTub
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