your are still a 'newbie' until you reach 5 posts

at 5 posts you become a 'member'

at 25 posts you become a 'junior member'

at 100 posts you become a 'senior member'

at 500 posts you become a 'Guru'

at 1000 posts you become 'The Master'

at 2000 posts you become 'GOD' 

if you are a MOD your name stays the same