misterjinx - 9:02 pm on Jan 20, 2011 (gmt 0)
we know that a crawler doesnt' visually render a page.
Google in webmaster tools experimental voice about load time declares to use at least 200 nodes from its toolbar.
But Google has also Chrome.
And Chrome can render web pages from a client side perspective, send back informations about URLs, page load time and other informations.
Informations that Google could elaborate (in aggregate form) ...