PM's got me killed in the first game. I think I better stay away from PMing a lot of people this game.
I know these are independent events, but I doubt Icy would be an FG two games in a row.
And to answer your question, some people fear that talking will get them lynched/killed. The mafia isn't likely to target you if you don't ever talk, and you are probably safe for at least the first couple of rounds from being lynched.
I was going to use that strategy, but someone had to go and misspell a word on purpose. It's my kryptonite, except that instead of weakening me, it turns me like the hulk!