From John Battelle’s must-read blog: Fun Stats for The Holiday.
He has the following image, which tells you how 3 different providers of stats give you crazy different numbers:
Who’s really right?? We’ll probably never know. It would be great, of course, to see Alexa’s take on this, but I think comScore/NNR/Hitwise in this case is actually counting searches specifically, rather than just raw pageviews.
For people that are interested anyway, here’s the Alexaholic comparison of Google+Yahoo+MSN+Ask+AOL, which shows a HUGE bias towards Yahoo (albeit declining) and MSN and Google duking it out. As I mentioned before, this should be taken with a grain of salt: