Leave it to those pokey little puppies at GameFAQs to figure out that IsleofRhodes.org wasn't the suckfest we first thought it to be. On the story page of the website, after hitting proceed to bypass the video, there are hidden Greek letters. If you can spell Kratos by clicking on them in order and then hit proceed, you're in. Darksidez at the GF forums gave the locations:

Kappa (under iota, middle right)
Rho (upper left corner)
Alpha (bottom right, left of soldier's waist)
Theta (under upsilon)
Omega (upper right)
Sigma (bottom right, by soldier's foot)

Once you spell out the name and click proceed you're greeted by another video, this one regarding the pegasus flying sequence, and then another puzzle, this time a timed sliding dealie, which I hate. Once you get past that? Another page, this time containing instructions on how to unlock HD mode in the game.

But wait, there's more!

After that page, should you click on "You Seek An Audience With The Fates", you are greated by this:

It looks as if there's a title starting to get spelled out above the countdown. G? and CH? God of War III: Chains of Love? Michael Fahey
Special thanks to Icy for the heads up!