Now I am looking at this service, and for the reason I listed above I do think it’s out of scope and shouldn’t be listed, in my opinion.
To me it does not really matter if you and @Niek-de-Wilde can confirm this is a good service. I think all of our recommendations need to be “auditable” by all readers, and we accomplish this by having discussions and explanations on our site in plain English so that readers can see why we list something, and by recommending services with documentation in plain English that readers can cross-reference with our site.
What if Dubline becomes worse in the future, who is going to notice? Maybe you two, but how long will it take? In this case only a small subset of our readers can audit the service for changes.
When everybody has the capability to audit services for changes, we hear about those problems virtually immediately. Historically this concept has worked out and the community has been very on top of things.
I don’t want to put more on anyone’s plate, but I’d be more interested in pursuing the possibility of you both creating a sister Dutch-language organization along the lines of what I was outlining above, that has its own team/criteria/research/community separate from PG, if you thought there was much interest for that in your own country. We don’t need everything under the PG umbrella, but we can certainly do cross-promotion and technical work for an other-language group doing its own thing.