Currently, we're using pushState when you scroll around on the documentation site to provide linkable URLs to the section you're reading.

We should change this to use replaceState. This will allow you to continue to click around the nav bar and use the back button — but will prevent scrolling from breaking your back button.

When I click in from blog post X to CoffeeScript.org and scroll a bit, and hit back, I want to be on blog post X: not a hundred pixels up.