A little humor every once is a while is fine.
Yeah just don't pay attention to people that really get on your nerves. It's not worth losing your cool over them.
As for technical discussions I love them since I learn alot about the technology that we are going to use. But I always like dealing with facts and with level headed speculation. I don't like talking about unrealistic things such as GPUs in the power brick for example. Or how Sony will magically makeup for the teraflop difference and how Microsoft will do the same with their I/O.
Like I said many times before each system has their strengths and weaknesses. Both of them will play games well.