Most useful techniques for two way data binding with js

Question

With abundance of web services and client side templating features of jQuery and likes, creating mashups or sites consuming a multitude of web services and posting data back to

Answer 1

I would take a look at Lava JS (http://lava.codeplex.com). It has very nice databinding and it is very unobtrusive to use. It also supports fetching/posting data to the server.