Just spotted something while looking through Apache logs:
18.104.22.168 ... "GET /ajax/xr/ready?x=clcgvsgizgxhfzvf HTTP/1.1" ...
Moreover, few lines below there is this:
22.214.171.124 ... "GET /content/halloc/index.html?&x=clcgvsgizgxhfzvf ...
This is pretty incredible in and of itself.
It also means that Google Bot has smarten up to a point where it can crawl an arbitrary Ajax’ified website and not “some dynamic comments” as before.
Good stuff, never liked that escaped_fragment contraption anyway :)