Thank you for writing this plugin!
I have 2 questions:
1. Click navigation always scrolls the new page to the top. Could this be avoided? I'm not a js coder myself, but googled a bit and found this demo
2. I'm testing a plugin called rehabtabs and it goes dead when ajaxify-wordpress-site is active. Any ideas?
All is on latest WP with Twenty eleven theme and no other plugins active.