Krellin, first things first, Chaqa already posted some information regarding the mafia in the first three games and how often they posted that I think is pretty important. It seems to me that while yeah, mafia *could* lurk, people look for lurkers, as you have this whole time, and as such, mafia are just as likely to post a lot. By that logic alone, you and I are just as likely to be mafia as someone that hasn't been posting a lot thus far. That's why when deciding these things we don't use "that logic alone" and instead put all the pieces together.
What you're proving right now is that you a) are having a lot of trouble changing your processes when clearly a better way has been proposed, which could be harmful in the long run, b) a lack of flexibility toward other play styles, c) a serious tendency to contradict yourself, and d) relatedly, strange play #6, when Chaqa provides analysis that counters your claim, you ignore it and continue on your merry way, expecting me not to notice.
I'm not by any means ready to say that you're mafia, and I still don't think you are, but your play so far is so erratic that even if you end up sticking around another day, I have zero confidence in what you're trying to do.