Couldn't find any info regarding your market. Are you launching worldwide right away? Journalism tends to be a fairly local thing, so targeting the right market is of some importance.
There isn't anything about our market, because we're not specific to any of them. If you are a journalist, write about what you are interested in. So far, we've had interest from people who write about finance, about tech, about gaming, and lots and lots of local journalists.
So long as you don't plan on lumping them all together into one big amorphous news website that tries to cater to all tastes but has no real editorial focus or voice. Give them tools to find / understand / build their own audience.
Sounds like you're on the right track there though.