The site itself is a demo of how a Bootstrap site should look. There is also a comprehensive list and explanation of all the nifty Javascript's they support by default.
There's a link to download all of the files from Github from that site as well.
> The site itself is a demo of how a Bootstrap site should look.
That's not necessarily the case. Check out the section "Built with Bootstrap" in the page you've linked for some examples of this.
The Bootstrap site is a good start if you want to get off the ground quickly, but you're much better off in the long run putting in the required time to actually create a design of your own.
Here's the link if you haven't seen it: http://twitter.github.com/bootstrap/index.html
The site itself is a demo of how a Bootstrap site should look. There is also a comprehensive list and explanation of all the nifty Javascript's they support by default.
There's a link to download all of the files from Github from that site as well.