What does the dot mean on Imgur?

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Tags

1. #poster
2. #often
3. #refers
4. #stands
5. #imgur
6. #image
7. #original
8. #within
9. #imgurian
10. #shared
11. #community
12. #green
13. #album
14. #appear
15. #relation
16. #comments
17. #their