Okay, my current line of thinking on who I think the Mole is:
Nicole- I seriously doubt that she is the Mole. The 'I'm going to quit' thing is a very nonmole-like thing to do (at least, there would be no reason to attract attention to herself by doing so if she were the mole). In my opinion, she's way to loud and out there to be the mole. Now, I could always be wrong and that could be part of her plan, in which case I will eat my hat if she turns out to be the mole. She is smart and rather sneaky, so I won't completely overlook the possibility of it being her. I'd say the chances of her being the mole are about. . . 7%
Paul- Once again, he's much to loud and brazen in my opinion, but there have been several arguments that he may be using a 'hiding in plain sight' method. He doesn't seem to be the brightest bulb, but he's made it this far so he must either be very well off in his suspicions or, well, the Mole. If the former is the case, the he probably won't last too much longer. I know I haven't built a very convincing argument on why he is not the Mole, but I just don't think he is. I really think that he's just another loud New Yorker. Chances of him being the mole are probably 20%
Craig- There are a lot of suspicions on Craig, which is exactly why I don't think it is him. I remember from previous seasons that there was always someone (usually out of shape) that everyone immediately assumed was the mole. Well, it seems like Craig is the one from this game. All this talk about 11 and the Titanic and rope keys and hpothermia and the countless other theories about Craig just continue to absolve my own thoughts. I don't think he's the Mole. On the other hand, the 'nice guy' persona could make a very good coverup, and his out-of-shapeness can be a great excuse for blowing challenges. But all of it is just not subtle enough for me, so I think the chances of him being the Mole are very unlikely. . . probably about 11%
Mark- Now, to the meat of the matter. In my mind, Mark is the prime candidate; he is the least suspected, he has a personality quirk that can allow him to slip under the radar, he has done his share of keeping money out of the pot, and has played an overall good game. No one seems to suspect him because he is so into the game, but I think that is his greatest strength. Being into the game gives him an excuse to write in his journal all the time, which, like I mentioned earlier, helps deter attention away from himself. Reversely, all this attention to detail and concentration on the game may not be superficial. Maybe he's just in it to win it. I like his style of play, I think he's an awesome person, and most of all, I really think he's the Mole. It just fits, you know. Id' say his chances are probably a 62%
I know, my percentages are probably a bit one-sided. And may not add up to one hundred (that wasn't what I was going for), but you get my point. I strongly believe that the Mole is always going to be the person you expect the least. I only stick by this because in previous seasons, the most obvious choice wasn't the Mole and the least obvious was. The Mole was always kind of like the clues on the show; they're subtle. You tend to overlook it when the Mole sabotages a challenge.
So I challenge you all to go back and look for the not-so-obvious screw ups that could potentially be sabotage. Remember, the Mole is paid to be overlooked, so if you're always noticing when they sabotage a challenge, they aren't doing their job correctly.