I haven't played any Multifaction games, but what you'd try to do, I think, is get whomever you feel is detrimental to your team's objectives lynched.
So, example. I decide Kay is a threat to my team, and I want her lynched. So I try to convince other people that her death would help them as well, so that I can get her lynched.
That being said, I'm not really seeing any person yet that's a threat to my team, so I'll refrain from voting, since I don't really think RVS votes have much use when I could just talk to the the person I want a reaction from outside the thread.