I have posted the monthly Hitwise rankings for a few months prior, and it seems to be of great interest - so here are April's numbers.
I tried to categorize and color code the various site, to make it easier to interpret. (For example, Hitwise considers Rental part of the Real Estate industry.)
In case you aren't familar, Hitwise is one of the services we find to the most reliable in terms of ranking popularity.
From a marketing perspective, you should be concerned with the yellow companies, those on which Realtors and buyers interact with each other.
From a Broker standpoint, I am impressed to see Zip continue to move up and stay on top of the list. If you haven't checked out their site lately, you should. They have some impressive features. (You have to register to see all of it.)
And again, there remains a strong presence of foreclosure resources on the list.