I think Bing is more willing to spend money to get traffic. You can easily get $5 a month in Amazon credit from their rewards program just by using Bing. They h

I think Bing is more willing to spend money to get traffic. You can easily get $5 a month in Amazon credit from their rewards program just by using Bing. They have a few other interesting promotions, such as starbucks cards and XBox Live Gold membership. But I'm sure this is costing them a decent amount of money.