One of the keys to navigation in a WWW with over a billion users and ever increasing amounts of content lies in: Levels of Choices Levels of Knowledge. Wikimedia has been moving in this direction by creating a series of sister projects: e.g. Wikibooks, Wikimedia Commons, Wikinews. These can be mapped to the SUMS idea of Levels of Knowledge. Indeed most Wikimedia efforts fall within the first 6 of the 10 Levels of SUMS: 10 Levels (of Knowledge) 1. Terms Wikispecies, MetaWiki 2. Definition Wiktionary 3. Explanations Wikipedia 4. Titles Wikipedia References 5. Partial Contents Wikiquote 6. Full Contents Wikibooks (including Wikijunior), Wikisource, Wikimedia Commons, Wikinews 7. Internal Analyses 8. External Analyses 9. Restorations 10. Reconstructions One Wikimedia project relates to the third of the 10 Choices 10 Choices 1. Access 2. Education Wikiversity 3. Levels 4. Media 5. Quality 6. Quantity 7. Questions 8. Space 9. Time 10. Tools