driller41 - 2:02 pm on Jun 29, 2012 (gmt 0)

@Zeus - see my earlier query, Matt Cutts tends to suggest that they do not collect data from Chrome.

Also where exactly does this data come from, not analytics, perhaps they buy ISP click data, chrome is the obvious answer but reading Cutt's description of what they actually collect [mattcutts.com ] I doubt it.