physics - 7:58 pm on Dec 20, 2009 (gmt 0)

#1 - 47% click-through #2 - 13% click-through #3 - 9%click-through #4 - 7% click-through

Is anyone keeping track on what effect Google's new custom-search-by-default setting is having on this?
Will be interesting to see if it narrows any of those gaps.