How do I get out of Super Rookiedom?

Here's the list of rankings, its all based on how many posts you have.

1. Newbie ( < 100 )
2. Trainee ( >= 200 )
3. Rookie ( >= 500 )
4. Super Rookie ( >= 1000 )
5. Public Figure ( >= 2000 )
6. Celebrity ( >= 3000 )
7. Trendsetter ( >= 4000 )
8. Idol ( >= 5500 )
9. Leader ( >= 7500 )
10. Star ( >= 10k )
11. A-List Star ( >= 12,5k )
12. Elite Star ( >= 16k )
13. Icon ( >= 20k )
14. Worldwide Phenom ( >= 25k )
15. Legend ( >= 30k )
16. selfmate ( >= 50k )
17. SelfMade ( >= 65k )
18. EPIC ( >= 100k )
19. Rainbow ( >= 300k )
20. Luminary ( >= 500k )