I think blank a good point earlier about how odd it was Faris tracked Galuf the third night. Then again, I don't know what I would think if someone did something the first night, but not the second. I definately wouldn't put poisoner together with Serah dying night 2, due to the role not being used all that often.
On Yuffie I'm not quite sure about what to think, day two she pressures everyone to vote, then day 4 is nowhere to be found. She doesn't particularilly strike me as scummy, but rather impatient.
Wedge. Well, I want to believe him, and with now having the bus driver role confirmed, we can assume his day one report got sent to laguna. So he got a report on himself. He won't telll us who he sent to or investigated night two or 3, so that is kind of suspicous. If no one is able to confirm getting the report soon, I'm liable to think he's lying. However, we have to account for the possibility he is accidentally sending his report to mafia, or that he is mafia himself and making sure all the "recipients" die. The best thing we could do would be to confirm a townie, ask that someone protect them, and then have him send tothat townie.
Out of the three, Faris seems far and away the most scummy, with wedge behind her a ways.
Yuffie just seems impatient to me.