I was included as a Yahoo news source (One of the lucky ones) but suddenly disapeared when we rebranded with a new domain.
We used a 301 redirection in order to not loose what we had started, all majors picked us up really quick, even Google news were quick to act. The only ones that did not pick up on this was Yahoo news.
I contacted them regarding the issue, god knows how many times - and all they do is keep redirecting me to departments or sections on Yahoo that have nothing to do with my querie? Do they actually read what is sent to them?
I then tried something - I removed the 301 for a week just to test if Yahoo news would pick up my source and bingo! they did straight away. I have now reverted back to the 301 to avoid any pr problems, but sadly have lost out on being part of Yahoo News.