Oh well, I'll post this simply because I'm so terribly nice :]

Useless Imp (Minimum Posts: 0)
Minor Imp (Minimum Posts: 5)
Imp (Minimum Posts: 10)
Trained Imp (Minimum Posts: 15)
Imp Lieutenant (Minimum Posts: 25)
Imp General (Minimum Posts: 40)
Imp Emperor (Minimum Posts: 65)
Orc Trainee (Minimum Posts: 90)
Common Orc (Minimum Posts: 120)
Orc Lieutenant (Minimum Posts: 150)
Orc Commander (Minimum Posts: 190)

That's a very small part of the whole list though.
I added some "special" levels too, that only count if you get 1 specific post number.

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram