I'm on the Cirie bandwagon too. She's playing my game. She knew going in that she didn't have the physical ability to beat anyone so she is outwitting them.
In the first episode when she correctly saw that Tina was her biggest threat she played by making herself appear important and planting seeds of doubt about Tina in the other women. That was really her only choice. And it worked.
She has consistantly played a great game. She has done really well in the challenges. Shes no Terry or Aras but she hangs in there with the rest of them. So no one could vote her out for not helping them win challenges.
She has worked hard around camp. So no one could vote her out for being lazy.
She went from being sixth in the alliance to third. Obviously she has the social skills to make people like her and trust her.
And she's stayed under the radar enough that if she does make it to final 2 she hasn't pissed the whole jury off.