Good point. Our current "onboarding process" for publishers is a bit too heavy-weight to allow "just anyone" – even you ;-) to join Blendle right now.
This is definitely something we're investigating though. And in The Netherlands, there's already a collective of journalists who created a non-profit umbrella organisation to represent freelance writers, who have been onboarded into our system.
Also, the Blendle Button that I linked to above is it's own product, with a much less heavy-weight onboarding setup. We've already seen great success using the button on a German site like http://uebermedien.de/abo/ (in this case, a flat-fee subscription button). So that's definitely something we'd like to roll out to as much freelance publishers as possible.