[esrauch]

I'm not defending the claimed numbers here, but it's easily possible that Google would be profitable at Bing traffic levels. Google is the largest and most profitable internet advertising company, so they could have larger margins per-click simply because of their position in the industry. Even excluding that, Bing could be purposefully doing things knowing that they will lose money (Live CashBack immediately comes to mind) in an attempt to increase market share, so simply being less profitable doesn't really mean that they couldn't be profitable..