It should be out of technology preview later this year.
> JavaScript sucks if you don't know how it works
It's possible to understand JS and want better. I think the people behind V8 and Dart know how JS works.
> what's the point of writting this when Dart itself compiles to JavaScript
What's the point of writing anything in any language? The Dart VM will be included with Chrome and other browsers are free to include one, too; Dart->JS is for browsers that don't and the goal is that it'll perform similar to hand-written JS.
> who the fuck uses Dartium as their primary browser
Nobody. It's for development until the Dart VM is included with Chrome.
I just runned it on FireFox and Chrome, and it didn't have a single error, you running the demo on what browser ? Did you even run the demo ?
This is a good start for anyone wanting to learn what Dartium is: http://arstechnica.com/business/2012/02/google-has-released-...
Stay happy.