- Enter the Ninja.com
 - Ninja site provides all things Ninja: pictures, movies, babes, facts, and a store. - Ninja - Wikipedia
- User-created article about the Ninja, including info about its origin, garb, weapons, and in pop culture.
- Ninjutsu - Wikipedia
- User-created article about the Japanese martial art, including its history, 18 skills, and schools of Ninjutsu.
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