Noooo, Yahoo powers Bing search. Bing powers Yahoo ads.
I checked again today.
If you don't believe it, just try any search term. Compare the last result on page 5 of Yahoo, then Microsoft. There you are.
Yahoo and Microsoft SERPS have been IDENTICAL for many months now.
The deal was, and is -
Yahoo provides the SERPS for BOTH Yahoo and Microsoft.
Microsoft provides the ADS for BOTH Yahoo and Microsoft.
Today, I also noticed that Yahoo has censored their SERPS - my recent popular page on Google page 1 cannot be found on Yahoo (and Microsoft) SERPS. Something about "you can't say anything bad about a large company, EVEN IF IT IS TRUE, if you are a peon. Well, peon Yahoo - they have it wrong, and Google has it right.
The same is true for image search -
Google search for bigcompany sucks = 105,000 results
Microsoft search for bigcompany sucks = 271 results.
Not only do we now have just 2 SERPS, when we used to have 3, but half of those results are heavily censored. Yahoo has been going straight downhill for years now. This latest result confirms their continuing quest for irrelevance.