There is not currently a browser in the chumby.
We've built a couple of "simple" browsers from various Open Source projects - they tend to be quite large and require a lot of resources, and the overall experience is pretty poor.
The Flash Player is only about 1.5M, and includes video, audio, animation, vector graphics, networking etc. The smallest graphical browsers we were able to make weighed in around 7MB and didn't include the necessary fonts and, of course, no plugins, very limited DOMs, and some didn't have functioning Javascript or CSS.
I recently built "links", a text-only, console-only browser, and it was just under a MB.
This is not to say that there will be no browser for chumby in the future - just that it's a hard problem to do well.
Perhaps some enterprising programmer will port a relatively complete WebKit implementation or something.