Next time you play, I suggest being a bit of a lurker (just not a pure lurker).
Also if you're not scum this time, I hope you get to be one soon; as it's an important perspective in understanding the game.
As a hypothetical imagine you're scum, and I just outed myself as Bulletproof. You now know not to target me. Similarly, if I out myself as Vanilla, I'm also a waste to target (less so than bulletproof, but still not ideal). Imagine then that Speed and Press also out themselves as Vanilla. That would tell you to narrow your eyes toward the dessert section to kill the town power roles.
Of course people do lie about their roles, but there's a general rule of Lynch All Liars (which is to say that baring no better tell, we'll start lynching the people who have been caught in any lies).