Konami is putting together some sort of alternate reality game for Metal Gear Rising: Revengeance. The "Make it Right" video was teased a little while back, and as it promised, here we are with an extended video called "Arm". It's even more convoluted and confusing than the last teaser. The video description reads, "First recovered video segment from agent Raiden's severed arm. Warning: Subject's personal memories may have become entangled due to trauma."
It also asks that you share the video "to speed up the decryption process of the next video segment" and points you in the direction of Revengeance's website. Over there you'll find that (as of this writing) the decryption is at 11% complete. I thought I'd go ahead and see if I could find anything by entering a command on the side, and the only thing I discovered was the obvious "Ray", which opened up a schematic of said Metal Gear.
This is all quite cryptic as of right now, but I'm sure as the internet keeps uncovering new hints and secrets something will be revealed eventually. Have any of you figured anything out?