Now, M$ is trying to enter into a deal with Yahoo (it still has to be approved by regulators, and all the arguments M$ used to stop a nearly identical deal between Google and Yahoo are going to be used against them) where Yahoo lets its search engine go through Bing. So Yahoo's search engine would be no more.
The stock market reacted to this by hammering Yahoo's stock, knocking it down 12.08 percent (Carol Bartz took over Yahoo after a shareholder revolt following M$ abandoning its plans to buy Yahoo. Under her guidance, Yahoo stock climbed 42 percent since January until just now). M$' stock rose 1.41 percent. Next day, Yahoo lost another 4.62 percent, and M$ climbed 1.01 percent. Steve Ballmer says he's surprised the market didn't react like it was the Second Coming because it's such a great deal. In fact, the Yahoo shareholders have given a vote of "No confidence". Tough crowd.
Part of the problem is that M$ and Yahoo are pretty much the only big players left from the Web 1.0 days and can't seem to change with the times. So they are hoping to consolidate and disguise the erosion, thinking it will end after that. Google's adaptability is running rings around them.
I've usually been happy with Yahoo's search engine, and haven't dealt much with Google's. This goes through, I will never use Yahoo's search engine again. M$ can eat me.