Relevancy - 12:53 am on Feb 15, 2012 (gmt 0)
and looking at IE it is there to enable or disable so it is a new change for chrome. And again you dont have to be logged in to get feed personalized results. It sneakly re-enables on its own after you disable it. It might turn on after you have been logged in for awhile or something, but I have not seen a pattern or time frame to get the exact timing of when it re-enables, but it does on its own.