Wait, there's more.

So, you can see Bootstrap is pretty snazzy. There's a lot more out on the web, and a lot of people doing really cool things with Bootstrap. Here are some. This list is in no way exhaustive.

BZ

Bootstrap Zero

Huge warehouse of free, open-source Bootstrap Themes and Templates
BS

Bootsnipp

Share common elements and Bootstrap code snippets
W3

Bootstrap 3 Tutorial

Bootstrap Tutorial on W3Schools
BP

Bootply

Playground for Bootstrap
BS

Bootswatch

Free Bootstrap Themes
BE

Bootstrap Expo

Beautiful examples of Bootstrap applications, curated by one of the co-founders, @mdo