Post ranks are as follows;Less I'm mistaken, Red changed it to where ye'll need to have a post count of 4,500 to reach the rank of Legendary Member but otherwise, what's quoted above by Ms. Ruby is the summarize.
Newbie - 0
Jr. Member - 25
Sr. Member - 50
Experienced Member - 100
Dedicated Member - 250
Full Member - 500
Elder Member - 1000
Elite Member - 1500
Hero Member - 2500
Legendary Member - 4000