We don't have an active editorial policy as far as I know, but we are limited by resources. It can take a lot of time and attention to "birth" new providers (as we like to call it internally). We pay a lot of attention to detail and want to make sure articles look the best they can in Blendle, keeping the authentic feel of the newspaper's/magazine's brand as much as possible.
In the beginning, we obviously had to actively seek out publishers. Marten and Alexander (our founders) spend a lot of time convincing publishers to come onboard.
As you can imagine, the deal we signed with The New York Times and Axel Springer gave us more "street creds" and made it easier to communicate with new publishers.
Still though, it's a large world out there, with a lot of publishers, each with their own wishes and doubts, so Alexander and Marten still have to convince them, just on a much larger scale now.