I'm not sold on the idea of arresting MelicharSux. I never found his "confession" of being the Outlaw particularly plausible - if anything, had it been posted in here in the course of normal conversation, I would've just laughed and taken it as a joke. Then we agreed that we would let him go for the night to see what the Mafia did to him [and this is where I start over-thinking], well the Mafia knows that was what we were doing and if they know he is just a regular townie (or even has the possibility to be the Outlaw), they could just let him go and hope that we do their job for them by arresting him. Or, you know, he could be Mafia himself.
There are a few people who have definitely managed to stay mostly under the radar, and that makes me wonder a bit too. But it's been a slow moving game, without a lot of interesting stuff happening - and I really haven't been around much myself - so I'm having a hard time finding them suspicious just for that reason.
I still think Loaf is Mafia and I currently plan to vote for him. However, I can be convinced to vote to arrest someone else if given a good enough reason.