Say what? Not quite sure I understand what you're asking, but here's my answers to what I think you're asking...
The OP (original poster?) is the very first post in the thread.
The original poster is also shown when you're looking at the forum thread view. Under the name of the thread is the name of the person who started it.
The question is, however, how would knowing the original poster cut a thread in half?
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.