in my case, msn delivers < 1% of my SE traffic, yahoo < 3% and google brings 95%. i wish i could do something about the msn and yahoo traffic without hurting google traffic
Within the last couple of weeks, MSN went from a small percentage to more than double what google.com sends. They moved me to the top of a few keywords and the traffic started to flow. I am still trying to figure out why they like me so much on certain topics and not others.