bears5122 - 6:53 am on Dec 15, 2007 (gmt 0)
What exactly do you mean? Care to elaborate?
Yahoo also sends you traffic from "search partners". While some of these are quality like AltaVista, some are complete garbage and home for rampant click fraud. In some competitive areas, you'll find that you will receive nearly 90% of your traffic from sites other than Yahoo!. They added a tool to block domains but it doesn't work on all their partners. Yahoo! turns a blind eye to this.