Sometimes. My impression is that sometimes they're mostly funded by Yahoo instead, and other times perhaps Bing. But one way or the other they're always getti

Sometimes. My impression is that sometimes they're mostly funded by Yahoo instead, and other times perhaps Bing. But one way or the other they're always getting most of their money from one of the major search engines. So even when they have a contract with Yahoo, they have a financial interest in staying cozy with Google because when their contract with Yahoo expires they're going to take offers from both Yahoo and Google and, even if they ultimately decide to sign another contract with Yahoo, the offer they get from Yahoo will doubtlessly be competitive with whatever offer they receive from Google.