justgowithit - 1:25 pm on Aug 22, 2007 (gmt 0)
They make money from vendors paying per click. I'm surprised you guys haven't used these engines once upon a time. There's no real-time data, it's all user-submitted product feeds that they draw their results from.
It's not unbiased, it's paid for.
Who ever said it was unbiased? All of these engines are out to make a buck. A few years back I was getting decent ROI from a few of them and then they started going down hill. Now I don't use any of them.