How do Smogon tiers work?

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Tags

1. #particular
2. #metagames
3. #include
4. #established
5. #restricted
6. #defined
7. #automatically
8. #participate
9. #lower
10. #pokemon
11. #ubers
12. #clearly
13. #tiers
14. #practice
15. #allowed
16. #means
17. #smogon