Oh god. This is more of a mindsmurf than the actual mindsmurf mafia... But this one is a little less planned I suppose.
Ok, so, as I read through I found it difficult to make out much, but I did find a few people to be a little suspicious. Namely Zhao Yun, Zhang Jiao and Meng Huo.
Obviously Zhao Yun for the incorrect claim on Cao Cao, after his role had basically been confirmed. As everyone has stated, these questions need answering!
I found Zhang Jiao a little odd when he started talking to himself, as you can see below:
(SPOILER)
Zhang then voted for Cao Cao after he had been confirmed governor, posted another post saying "It is so cool. Work with me, baby." and then when Cao Cao pointed out how suspicious Zhang's activity was he removed his vote. He later went on to change his vote many, many times, which simply added to this already confusing game.
(SPOILER)
Initially I only had some weird feelings about the way Meng Huo posts, but I think the reason I find him suspicious is because he seems to post quite often, without really adding anything to the discussion, as if he is posting so that he doesn't look inactive. I find that posts like these simply crowd the thread and make it harder to see valuable posts.
Then there was the fact that Meng Huo voted for our confirmed governor and then quickly unvoted him after Cao Cao went to stop the lynch. We had already confirmed that Cao Cao was a governor, so voting for him was purely a waste a a day's lynch.
Discussing and voting is the only way that we can seek out the scum, so I think that everyone who voted 'just to see what would happen' either didn't think it through enough, or are scum.
I don't have enough evidence to place a vote yet, so I'll have to wait till these people can respond till I can do anything further.