Official part 6, extending on Theory #8587 can be found on this link if you want to check it out:

http://www.whoisredjohn.com/See-a-theory-Red-John/9300

We may have been misdirected in the Red Barn episode. Father DiBuono told Jane that Talbot said some "kid" painted the Red John smiley and from that statement we've be led to believe that was the same person who actually murdered Talbot and Charney. But what if Talbot and Charney were killed by Stiles (cleaning up a mess, which it seems the Red Barn was) and noticed the smiley, which appears to be derived from a Visualize ritual (like we see in "Fire and Brimstone"), and decided to adopt it. So the Red Barn wasn't necessarily the birth of Red John as much as the birth of the smiley.

Net is, we were led to believe that the "kid" who painted the smiley commited the murders, but there is no proof that is the case. This could simply be the writers providing some interesting background (origin of the smiley) and conveniently using that as a way to misdirect us and remove suspicion from Stile.

Honestly, i never thought that it would see it so clear. I am still wishing that there is a major plot twist (like partridge faking his death or somebody who is not on the list of 7) but i dont see it coming. Jane is fokussed on the 5 remaining suspects and fokussed on the tatoo thing. I cant imagine that he is doing a bluff or trick here..this man is on a mission. "A mission to kill" and to take revenge :).
We know that Red John is one of the seven and that he is the leader of Tiger Tiger.

It seems that the plot is so free of inspiration that we are left with three man with a tattoo. My favourite was Sherrif Mcallister but in the last episode he said " No Patrick, you get it wrong, i am not Red John". This is something Red John would never say. So McAllister is out.

I personally think it is Bertram. There are so many clues and even if it would not show great Story Telling and would not be the great surprise, it would fit very good.

He is the Chef of the CBI. So it would have had great access to all informations and it would have been easy for him to look over Janes investigations and to controll him.

Jane doesnt like him and thinks he is "creepy".

There are so many scenes that would make sense. For example in 6x01 minute 10:00 Bertram says: "I
know sometimes i must appear calculating or even duplicitous to you,
but please understand it comes with the job description. I am many
things to many people". Come on...It is so obvious: He is Chef of CBI, Tiger TIger and he is Red John."
Furthermore he said at least 3 times this season to Jane that he wants to be there if Jane catches Red John. Why? Does he want the information to protect himself? This scene is very suspicious. Look how Jane is looking at Bertram at the end and at his walk...http://www.youtube.com/watch?v=m8Tv63l30i0

How to interprete the scene with Smith and McAllister in the office. Many of you are thinking Smith seems to give orders to Bertram and is above him.I dont think so. I think Smith is nervous because of Tiger TIger and says to Bertram: It is your job to know. That implicits that Bertram is the chef (of Tiger Tiger), because it is up to the Chef to know what is going on.

In addition to this it would make sense that in this scene http://www.youtube.com/watch?v=pyhCIR4e4MQ
he is talking to Michael (!) Kirkland. A conversation between Red John and his closest follower :).

Bertram was also there at the end of season 3. Would have been easy for him to know about Janes Trick because he had information from O Loughlin about the different room numbers. It seems so that he is feeding Jane with Information about the "rope", making the synapses clicking :).

I think it would not be spectacular if he is Red John but it would absolutly fit and would be in much more points coharent with the story line as with other suspects.
I hope Bruno is giving us a lot of flashbacks so we can understand how Red John operated and managed to maintain unknow.

ps: i dont think we didnt saw red john with rebecca. just another assistant.
pps: about the poker game. could be very well that bertram was "bluffing" his poor game to get intouch with jane. we know red john must be a great actor.