Is it possible that most people only discuss here to fulfill their signature requirement?
Do you really need to ask about it? I believe it is a well known secret already since few years back.
Some people are posting here because they want to fulfill there weekly post count but I think thinking only in this direction is not correct, there are some users that I checked most board they post while seeing gambling board most, evven more than bitcoin boards, this kind of people are just passionate about gambling and they see everything about it as pleasure including posting about it here. There are also some users that did not even wear the signature or avatar and yet posting on gambling board.