Hi there, I posted this question in the "wall observer" thread under Economics > Speculation, but I think everybody skipped over it.  Basically, I don't know how to read the market depth graphs in this thread: https://bitcointalk.org/index.php?topic=85687.0, and I'm wondering if anybody can help me out.  I tried googling, but my goog-fu skills aren't good enough because I couldn't really find the answer.

Thanks for helping