I can't really comment on anything since I was the first one killed in the game, because Dylflon said he was in contact with someone claiming to be the vigilante (which I never actually claimed to be - I just didn't answer him when he asked me what I was).
I did however watch every thread, and it seemed obvious (to me, anyhow) that Tornado and BF was mafia. I also assumed Three Dog was, because he owed me a backstabbing after last game.
The vigilante seemed to lack purpose at times, however. Which was a major downfall for the innocents.