| Vocabulary | URLs / Total | URLs / Percentage |
|---|
| http://www.w3.org/1999/02/22-rdf-syntax-ns | 4,849,748 | 43.84% |
| http://purl.org/dc/elements/1.1/ | 2,448,004 | 22.13% |
| http://rdf.data-vocabulary.org/ | 1,910,673 | 17.27% |
| http://opengraphprotocol.org/schema/ | 1,779,068 | 16.08% |
| http://purl.org/dc/terms/ | 1,638,930 | 14.81% |
| http://www.facebook.com/2008/ | 1,620,284 | 14.65% |
| http://creativecommons.org/ns | 1,465,574 | 13.25% |
| http://xmlns.com/foaf/0.1/ | 1,163,775 | 10.52% |
| http://www.w3.org/2006/vcard/ns | 957,054 | 8.65% |
| http://search.yahoo.com/searchmonkey/media/ | 931,623 | 8.42% |
| http://x.myspacecdn.com/modules/sitesearch/static/rdf/profileschema.rdf | 915,050 | 8.27% |
| http://www.purl.org/stuff/rev | 647,757 | 5.86% |
| http://www.w3.org/2000/01/rdf-schema | 600,562 | 5.43% |
| http://search.yahoo.com/searchmonkey/commerce/ | 509,993 | 4.61% |
| http://purl.org/media/audio | 331,560 | 3.0% |
| http://purl.org/media | 331,560 | 3.0% |
| http://purl.org/commerce | 330,947 | 2.99% |
| http://search.yahoo.com/searchmonkey/action/ | 327,633 | 2.96% |
| http://search.yahoo.com/searchmonkey-relation/ | 321,142 | 2.9% |
| http://dbpedia.org/property/ | 289,638 | 2.62% |
| http://rdfs.org/sioc/ns | 267,909 | 2.42% |
| http://www.w3.org/2004/02/skos/core | 265,820 | 2.4% |
| http://search.yahoo.com/searchmonkey/product/ | 248,777 | 2.25% |
| http://www.w3.org/2002/07/owl | 213,586 | 1.93% |
| http://dbpedia.org/ | 210,895 | 1.91% |
| http://www.w3.org/2002/12/cal/icaltzd | 184,198 | 1.67% |
| http://dbpedia.org/ontology/ | 182,830 | 1.65% |
| http://search.aol.com/rdf/ | 126,702 | 1.15% |
| http://search.yahoo.com/searchmonkey/page/ | 124,425 | 1.12% |
| http://search.yahoo.com/searchmonkey/reference/ | 124,301 | 1.12% |
| http://rdf.data-vocabulary.org/ | 122,295 | 1.11% |
| http://purl.org/goodrelations/v1 | 96,267 | 0.87% |
| http:/rdf.data-vocabulary.org | 49,043 | 0.44% |
| http://developers.facebook.com/schema/ | 45,940 | 0.42% |
| http://purl.org/stuff/rev | 33,137 | 0.3% |
| http://vocab.org/frbr/core | 21,664 | 0.2% |
| http://opengraph.org/schema/ | 20,669 | 0.19% |
| http://www.w3.org/2003/01/geo/wgs84-pos | 18,720 | 0.17% |
| http://www.georss.org/georss/ | 17,285 | 0.16% |
| http://sw.opencyc.org/2008/06/10/concept/ | 14,572 | 0.13% |
| http://search.yahoo.co.jp/searchmonkey/shopping/ | 14,342 | 0.13% |
| http://www.w3.org/2006/vcard/ns/ | 9,189 | 0.08% |
| http://www.abmeta.org/ns | 8,162 | 0.07% |
| http://commontag.org/ns | 6,486 | 0.06% |
| http://www.w3.org/1999/ | 6,424 | 0.06% |
| http://www.openlinksw.com/schema/attribution | 5,352 | 0.05% |
| http://www.openlinksw.com/schemas/oplweb | 4,680 | 0.04% |
| http://www.w3.org/2001/vcard-rdf/3.0 | 3,957 | 0.04% |
| http://www.geonames.org/ontology | 3,787 | 0.03% |
| http://purl.org/rss/1.0/modules/content/ | 2,869 | 0.03% |
| http://rdfs.org/sioc/types | 2,286 | 0.02% |
| http://i.yimg.jp/images/auct/dev/rdf/auctionschema.rdf | 1,996 | 0.02% |
| http://ogp.me/ns | 1,949 | 0.02% |
| http://mostplays.com/ | 1,696 | 0.02% |
| http://opengraphprotocol.org/ | 1,631 | 0.01% |
| http://purl.org/dc/ | 1,506 | 0.01% |
| http://creativecommons.org/licenses/ | 1,372 | 0.01% |
| http://www.facebook.com/2008/fbml/ | 1,364 | 0.01% |
| http://rs.tdwg.org/ontology/voc/TaxonName | 1,282 | 0.01% |
| http://rs.tdwg.org/ontology/voc/Common | 1,277 | 0.01% |