okay so i have read almost all of these theorys so i have a rough idea of what yous all think. 
i dont know who red john is, None of us do thats the point were not supposed to.

i do know however that patrick jane id not red john i mean come one  what was he expected to do become friends with himself , shake hands with himself its stupid

walter mashburn and patrick are friends ( i wouldnt let someone drive my very expensive car off a cliff unless they were concidered a friend) 

none of the CBI team have anything to do with it like lisbon cho wayne or grace but i think grace either knows wh it is or has a theory because she has been acting diffrient the last season or so 

cristina fry is not red john because she likes patrick and you dont kill someones family if you like them. red john does "love" patrick in some way but its in moreof a " i love messing with you" type of way.

minelli is also not redjohn because he is too emoitional , like when boscos team all got killed by red john he was very upset. i know he was obviously not going to be over the moon but quiting his job is serious he obviously was upset but red john would have been happy he was the one that done it or made rebecca do it.

basically what im saying is the writters are not going to make this easy.we will be dissapointed no matter who red john is were just going to have to wait. but im looking forward to seeing the rest of the theorys 

NO

Sorry for my English, I'm from Venezuela.
This is not an accusation, but did someone remember the last episode of season 3?
There was 4 suspect on Laroche list and they make us think that one of them is the RJ accomplish, then the dispensable killer goes to the last floor with the intension of goin one floor down and kill Hightower. But there is a funny fact here, what is the dispensable killer was not going to go down just one floor down? What is all four suspect even including Laroche are connected with Red John and they all gave him the address so he could think send the dispensable killer to all floor looking for Hightower since he know all addresses or just sent the killer to Bertram floor so he could distract them for O'laughlin to kill Hightower and then sent Timothy carter to the mall where Jane met with Bertram since Bertram is also an accomplish of RJ he told him they will meet in that mall

I guess Brett Patridge is Red John.
- Many people are saying that Red John must have appeared since Season 1 and that he has to be one of the "three main characters". Brett appears at the first episode.
- Also, many people say that Brett always appears to "mask" Red John cases.
- His voice is very similar to Red John's voice at 2x23. 
- PJ always says that Brett is a ghoul. I'm sure PJ hates Brett. Then they aren't friends. Lorelei said that PJ and RJ aren't friends.
- Brett, in fact, is really smart (he just pretend he isn't). They say that equal people hate each other and the opposite attract. PJ hates Brett because he is just like him. Lorelei also said that PJ and RJ are very similar. 
- At 5x15, Brett talks about the "human torch". Possibly, it's the same trick that RJ used at 3x09.
- And at last, RJ is a thin and agile person (see 2x23) then he can't be someone like Minelli that is a little overweight and old (no offense to the actor).

The question is if Brett has a connection with Visualize, it would be the last evidence. Well, people say that PJ and Brett shook hands "offscreen", but I'm not sure of that. If they didn't, Brett can't be RJ. Sorry about my english, it's not my native language =(