People, the writer of the show has stated that :
ONE OF THE SEVEN IS RED JOHN. 
End of that discussion.
Stop with the nonsense theories about the fake list, i think that next season is gona be like the following, main characters will star to die.
Also they told us the hunt for red john gonna change, and the reason is because the season 5 finale.
So lets get focus on the 7 suspects... i think its Brett Partridge

Bret Stiles
too old, plus Bret and Jane are friends, but im pretty sure he knows who is red john

If it's not brett i think in Kirkland, many people say that he is not reveal until season 5, but maybe he was on the show at the background...i remember to see some pictures with a men in a limo talking with minelli in season 2, and he looks just like bob....