From the looks of it, you was probably banned for insubstantial posts. I looked through the last 2 pages of posts that you made and they was not 1 that I seen that was over 2 lines. Most of your posts consists of 5 or 6 words. I would say this is the most obvious reason that you were banned. Bitcointalk is making a crackdown on spam quality posts. In the future try to put a little effort into it.