Yeah this game is an awesome social experiment. It has no set standards for kicking people or even winning, and it has always intrigued me to know what standards people try to use to give themselves some sanity in their choices.
But what's really awesome about this game, is that it's not important what your own standards are for staying in it/winning it, it's what other people's standards are. In other words the very premise of the show forces players to know what the heck their competitors are basing any of their decisions on. It's a completely wild game. Sometimes a jury member won't throw a vote your way because you stabbed them in the back, sometimes they'll throw a vote your way because you stabbed them in the back.
And so everything is fair play, especially our interpretations of this madness. Finding trends and making predictions becomes very fun