Copy paste from the site:
The goal is to enable easy-to-use object replication between
loosely connected machines. A browser and a server can share a pool
of objects. If the browser program makes a local change to any object
in the pool, the change will propagate to the server. And vice versa.
What this enables:
and from there to MySQL or whatever.
* Rich models
It's easy to communicate lots of different kinds of data and
relationships, which is especially handy for complex models and
* Observation api.
Use the observation api to do MVC/data binding style programming. And
then support for network delivered changes comes for free.