I should say this:
A good townie is an active townie. This kind of pace doesn't occur usually. So as newbies, try to take a deeper, more proactive approach to finding scum. If it might help, go to Mafiascum.net and look at their wiki about Mafia theory. It has helped me. And of course, play more games.
Anyways, good ways of finding scum is talking. If no one is really talking, you have to take a stand and talk about things you find suspicious. Nothing happening? Then make something happen. Even if it gets you attention, that can put you in a bad position. You don't have to worry because you are town, and should be able to defend yourself by explaining exactly was going on in your mind. Then once something happens, you can talk and if people are not present... YOU ROPE THEM IN.
Mafia can be deep. You do have to read and sometimes re-read to find what's between the lines and who is trying to hide within the town. I think this is all I wanted to say.
Be active, talk about suspicions, shake things up to get discussion going. prod bystanders, etc etc.