First of all, IMO last night's vote was a complete crap-shoot. The way the random generator decided to kill 2H, an innocent, and that's just sucky luck. Here are my opinions on your opinionsNight one vote count..something else just seems to throw Rich, Ninja and UN into a "common thought" kinda thing here for me.
We have Ninja first voting Rich, pulls off about a half hour before nightfall taking him out of the tie and voting FF someone who had no threat of going at that point landing him in a "safe" spot.
Rich voting Chill for being to quiet...problem with that is Chill normally is pretty quiet on day 1 and never posts much on the weekends, he has played enough games with Chill to know this.
UN tried to come off Chill (to save himself), which can be a valid reason I know not everyone plays the same but personally I would not pull myself out of a tie and try to vote someone else unless I really felt they were evil. He tried to move to 2H (a now known innocent). Funny though how he was voting with Rich at the time and the fact Chill was taken out by the hit man.
I don't know, maybe I am just seeing to much into things but there seem to be many things that put Rich, UN and Ninja together.

NPR: Can't decide who, but it does seem that there is a more experienced player coaching NPR. Which could be FF, UN, Rich, you, or Pir of course (I'm awfully sure though that Pir isn't scum though :silly

Rich: I wouldn't call Rich scum just yet and I'll explain why. I think it's pretty agreeable (no offense to anyone else) that you and Rich are the 2 most experienced players left in the game. I have trouble with the idea that he would vote for his hit-ee. I'm kind of toying with the idea that they did a simple framing. Rich voted Chill relatively early (2nd to vote), which this theoretical scum team (not including rich) picked up on. For whatever reason, that sounds a bit FF-y or UN-ish. Not saying Rich is/isn't scum, but I don't think you should grill him for his vote.
UN: UN, maybe, but he claims that he was trying to save himself. I'd buy that. A self-preservation vote isn't such a bad thing. OMGUS votes, worse, but not terrile. His was in between those, so I think his vote was not a terrible one, at least for D1. Same with Rich, not saying he's scum or not, but I don't think he should be criticized for his vote.