This is a great project indeed. However, as many here have already pointed out, there are many limitations to this approach, SEO and lack of ctrl+f for example.

This is a great project indeed. However, as many here have already pointed out, there are many limitations to this approach, SEO and lack of ctrl+f for example. Which reminds me of flash. Most flash controls had similar drawbacks. I think web development shouldn't repeat that mistake (again). It also reminds me that Google Docs took similar approach. As far as I remember they use a lot of canvas with a bit of DOM intertwined where necessary.