Screw Hashbangs: Building the Ultimate Infinite Scroll 
This breaks the back-button for me, despite the author claiming otherwise.<p>Steps to replicate:
1. Visit article
2. Click on logo to go to the home page
3. Scroll down until more content gets loaded
4. Click back button<p>Expected behaviour: Get moved back to the article page
Encountered behaviour: Still at front page, scrolled to the middle.<p>Using Safari 5.0.5, OS X 10.6.7