Do Registry Cleaners improve performance?

Related questions

1. What does Hkey_local_machine mean?
2. What does Hkey stand for?
3. What are registry values?
4. What are the 5 registry hives?
5. What is Hkey_current_user?
6. Has been disabled by your administrator?
7. Why do we use Regedit?
8. What does regedit exe do?
9. Is cleaning registry necessary?
10. Is registry cleaner safe?

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19. #things