The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Administration of this site (4 members)
- Approval/concurence on buy pencils (1 member)
- BlogListingPage (0 members)
- Blog posts (1 member)
- Browse (9 members)
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- Category (1 member)
- Cleanup from July 2006 (1 member)
- Community (2 members)
- Conditional copyrighted free use files (0 members)
- Copyright (3 members)
- Copyright tags (11 members)
- Copyrighted free use files (1 member)
- Dirk (1 member)
- Disambiguation (1 member)
- Disambiguation and redirection templates (1 member)
- Events (1 member)
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- Files requiring attribution (0 members)
- Files with unknown copyright status (0 members)
- Forums (6 members)
- GFDL files (1 member)
- GPL files (0 members)
- Help (6 members)
- Help desk (4 members)
- Hidden categories (2 members)
- Image wiki templates (1 member)
- Magic (1 member)
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- Templates (3 members)
- Test (3 members)
- Test1 (1 member)
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- Watercooler (2 members)
- Wiki (1 member)