As I mentioned in my earlier post - Comepete.com, comscore, alexa and hitwise are a bit like the three witches of eastwick when it comes to calculating traffic.  None of them report consumer traffic accurately, but they are pretty good predictors.  In may last post, I mentioned that compete.com reported realestate.yahoo.com out-pacing realtor.com in consumer traffic.  Thanks to the good people at comScore, who have volunteered the data - we now have a second data source demonstrating that realtor.com is no longer the top dog in online search.