I'm not sure that I'm as convinced as some of you that SFS is no longer suspicious (or maybe people are saying he's still suspicious but reading town). Galzria's right, he's no less likely to be mafia because he's new. And if he is that new I'm not sure he would fit our conventions of what a mafia would try to do. Even if he wanted to try to fit in, he may simply not know enough about the game to do it convincingly, so he hasn't tried.
I'm definitely not confident that he is mafia, but I'm not sure why people are already dismissing that possibility. I think if anything, he's hard to read so it's tough to be sure.
Also, I think I am somewhat more suspicious of pops after the exchanges this evening. Not only is his style offputting, but his defense of SFS from nowhere is baffling. He has been really abrupt and unclear, and has offered a bare minimum of reasoning behind his statements. Considering that he is one of the most experienced mafia players among us, I would have expected a lot more. I mean, I guess it would seem like he would go to more effort to look like a helpful townie if he were mafia, but I don't understand his strategies at all so far. It seems like he should be able to be really helpful and he's just not so far.