As seen at Search Engine Journal, submitting our site to Yahoo! News is crucial, due to “the need for content syndication”.

While, Google's headlines are selected for Google News through a software which searches thousands of sources and selects only the news bits it considers newsworthy, Yahoo's is "powered by content partners, and internal search stories are served via the Yahoo News index".

Simply, go to the News Source Submission Form, fill up basic questions on news topic, RSS feed and geographic location and finally submit your site.