Check out the working version at www.google.com.au
I wouldn't be surprised if there's an easter egg somewhere in the working version.
Don't know, you can control the sub with your keyboard.
I think that this is obvious, but in case it may be a spoiler to some, the following is encoded with rot13.
"Tbbtyr" vf va pbeny ng gur obggbz. V pna anivtngr gb senzr rnpu yrggre jvgu n cbegubyr.
And the blogpost,
This image is a loser on the page. Cannot tell what it is. Overdone.
The HD version of the logo,