I really don't like Ari's faust case, but I don't think it's malicious/scummy per se, just a bit of an indication that they're a newbie with little feel for people's meta, or the overall meta of f.ds mafia.
@Ari, hi! I don't think we've played before. Apologies for starting out our interaction with a criticism, but coming into a game with a blunt assertion that it's anti-town not to share everything, while obviously being unaware of the long history of this having been discussed in numerous games before, is a bit naive, and really isn't going to win over many of the vets. Faust is a seasoned player who knows what he's doing. He comes across as weirdly cantankerous sometimes, and economical with his words, but that's not alignment indicative. The only reliable tell I found for him being scum is that if you get into a situation where there's complex logical reasoning, he can sometime spin it the wrong way to cover for himself or his teammates as scum, but obviously won't use the same spin as town. It's not a very frequently-applicable tell :-(
In case it helps give you a framework for thinking about the more meta side of the game works here, consider that any given player, especially vets who've been playing such games with one another for years and years, is probably not thinking only of their win or loss in this one particular game. They've got form, there are things they've done before as scum, and things they've discussed previously with people who were their scum buddies in other games, but who might now be town while they're scum again (or vice versa!), and there are patterns of behaviour that tend to repeat. The pace of innovation in any given direction is limited by how people feel any changes in their behaviour might adversely affect their faction in this game, and also other people's perceptions of them in future games. If you're too ridiculously townie as town and can't emulate it when you're scum, your scum game suffers. If you're too unhelpful or abrasive as a player, people will more happily lynch you off even in your townier games. Players like faust are so ancient they've converged on some kind of an optimum presentation. (I (hope I can) get away with saying this, since I'm more ancient than faust is IRL, even though I'm a relative newbie in f.ds mafia terms, having only been playing mafia here for ~3 years).
PPE 6 or 7: not sure that needed an essay, but there you go :-P