ItsNat v1.2 is the first release LGPL v3 licensed allowing closed source web sites and applications built on top of ItsNat.
The Single Page Interface Manifesto summarizes this "new" trend of web sites.
Almost any typical conventional web site based on hundreds of pages can be converted to a single page, changing only page parts on demand usually as the result of user actions. This example shows how a conventional page based e-commerce web site can be converted to SPI (in this case 2 pages with more effort could be one), the same in Google App Engine. In spite of server-centric nature of ItsNat, memory consumption can be extremely low (interesting for GAE).
Feel free to build with ItsNat the new generation of SPI web sites.