When it comes to news search engines, it seems like all we talk about is Google News and rarely Yahoo or Bing News.
I spotted a WebmasterWorld thread with a rare post by someone included in the Bing News index. The publisher said, "My site has just been indexed in Bing News. And I like it."
He said he didn't request to get listed in Bing News, which, by the way, doesn't work. He was just included randomly and he loves what he sees.
He noticed an "uptick in retweets" and looked into it. It turned out to be Bing sending traffic to his site via Bing News.
Yes, Bing is way more selective than Google News. He also said that some of his content gets pulled into Bing News on a two-day delay. I am not sure if that is specific to his site being newly indexed or just the way Bing handles "news," which kind of doesn't make sense.
Forum discussion at WebmasterWorld.