I personally have to go with Staar. Many people will question this decision but she is the most Liberal poster on this site, half the time she does not even know what she's talking about but she will still throw her two cents in. I have to give that poster a CC.

Honorable mentions are

1. Bilbo
2. El Gamo
3. Wacko 3205
4. Britkid
5. Violent Demise ( Holds nothing back, you have to respect that)