The following categories exist in the wiki.

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  1. Investment ‎(39 members)
  2. Operating Systems ‎(38 members)
  3. Fruits and Vegetables ‎(37 members)
  4. Buddhism ‎(37 members)
  5. Judaism ‎(36 members)
  6. Diet & Nutrition ‎(36 members)
  7. Psychology ‎(34 members)
  8. 2012 Gubernatorial Elections ‎(33 members)
  9. Rock Bands ‎(33 members)
  10. U.S. Politics ‎(33 members)
  11. Famous Personalities ‎(32 members)
  12. Pets ‎(32 members)
  13. Health Insurance ‎(32 members)
  14. Medicine ‎(31 members)
  15. Geography ‎(31 members)
  16. Cellular Biology ‎(31 members)
  17. Programming ‎(30 members)
  18. Telecommunications ‎(30 members)
  19. Marine Life ‎(30 members)
  20. Fitness ‎(29 members)
  21. Recreation ‎(29 members)
  22. Geology ‎(29 members)
  23. Television ‎(29 members)
  24. Microbiology ‎(28 members)
  25. Basketball ‎(28 members)
  26. Botany ‎(28 members)
  27. People ‎(28 members)
  28. Countries ‎(27 members)
  29. Diagnostics ‎(25 members)
  30. Tennis ‎(25 members)
  31. Hinduism ‎(24 members)
  32. Weather ‎(23 members)
  33. Nutrition ‎(23 members)
  34. Tablets ‎(23 members)
  35. 2010 Gubernatorial Elections ‎(23 members)
  36. Actors ‎(23 members)
  37. Cosmetology ‎(23 members)
  38. Gaming ‎(22 members)
  39. Festivals ‎(21 members)
  40. Alcoholic Beverages ‎(21 members)
  41. Zoology ‎(20 members)
  42. Accounting ‎(20 members)
  43. Musicians ‎(20 members)
  44. Baby ‎(20 members)
  45. Computer Networking ‎(20 members)
  46. Philosophy ‎(20 members)
  47. Organizations ‎(19 members)
  48. Movies ‎(19 members)
  49. Aircraft ‎(19 members)
  50. Culture ‎(19 members)

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