I have been seeing a very weird thing lately. I got a heavily penalized site from the January scraper update. I use google chrome but they mess around with the google searches so I use firefox to track the "natural" search. Now I am completely logged out of google and I search "widget" and I appear on first entry on page 2 which knowing the traffic from this keyword I know cannot be.
So I fire up explorer that I use rarely do the same searched (logged out of google) and lo and behold I am on page 31. I though Personalization is only active when one is logged into google.
I have tried it multiple times for two days now and get the exact same results.