Sry there are no clues or secrets.
http://www.mortalkombatonline.com/content/forum/showmessage.cds?id=29599

some of the messages are:
"Hornbuckle who?"
"Look for me in the pit"
"Have you ever seen a Kano Transformation"
"Look for the Master of Fists in Oceania"
"Get out of my house"
"They're Here"
"Shylock has a big >>>>"
and a couple others I cant remember.

"I am speaking backwards, spooky, isn't it?"
"Now here's another exciting episode of What You Get"
"Rain is purple, get it?"
"Smoke's nanotech systems are transforming his shape."
"There is a little bit of me in everyone."
"It is a little known fact that Ermac is short for Error Macro."
"Ed Boon 490 Ed Boon 490 Ed Boon 490"
"You rock the house like Midway."
"Will Hsu Hao return from the dead? Well, probably not."
"The spirit of Liu Kang will live on."
"Onaga seeks information in Edenia, Tanya will provide it for him."
"Perhaps you did not know this, but Noob Saibot spells something backwards."
"John Vogal is a genius."
"Drink milk, get plenty of sleep, listen to your parents, do your homework"
"Reiko is not Shao Kahn, though sometimes he secretly wears the emperor's helmet."
"Find Liu Kang in Outworld, and inform him of Tanya's trechery for a different reward."
"The void is a place beyond the realms where the Elder Gods dwell."
"In their purest form, the Elder Gods resemble the dragon symbol on the Mortal Kombat Tournament."
"The realms are in fact the shattered conciousness of a singular being."
"There are many realms."
"The Elder Gods do not directly interfere in the affairs of the realms, for fear they may awake the one being."
"All of existence is merely the dreams of the one being."
"In the beginning days, Sorcerors were commanded by the Elder Gods to construct the many portals that connect the realms."
"The Mortal Kombat tournament was created to allow Shao Kahn to earn the right to merge other realms with Outworld."
"Onaga was poisoned and slained by his advisor, Shao Kahn.
"The Dragon King watched from beyond death as events unfold."
"The Dragon King's army was undefeatable due to his ability to revive his troops from death."
"The body Liu Kang has been reanimated, it has brought destruction apon his shaolin brothers."
"The Dragon King revived the slain heroes who confronted the deadly alliance."
"Raiden will return from annihilation, but he will not be as he once was."
"You are being deceived!"
"Onaga took posession of Reptile's body in Outworld before stealing the Kamidogu and claiming Quan Chi's amulet for himself."
"Scorpion is the true champion of the Elder Gods."
"To defeat the Dragon King, you must take from him back which makes him strong."
"If you have decoded this, you have way too much time on your hands my friend."
Taken from the Iguide.