Hello. I just looked at your website and read your ANN because your project has aroused my curiosity !
I don't want to be rude, but this project look like a gadget to me. It reminds me of some plugins for Windows XP that allowed to navigate through the folders via a "Matrix like" 3D interface. Or as you said, "Second Life".
I can't imagine myself browsing fast and effectively on social networks through a 3D interface. Or on Reddit, Amazon, Nature, CNN, and many more.
How can you ensure a 3D world or at least qualitative and non-repetitive 3D rooms for websites whose contents are changing all the time ?
Who will be in charge of this huge 3D modeling work and how will it be implemented on today's websites ?
Isn't it reserved for very specific and occasionnal static websites ?
And finally, can you give me some examples based on the actual popular websites :
https://en.wikipedia.org/wiki/List_of_most_popular_websites ?
It's a lot of questions, I know. But I'm afraid this kind of 3D visualization will become boring once the "wow effect" is over.
Cheers !