Software in Dutch has a bit of a tension between je/jouw and u/uw too. Je/jouw sometimes seems to familiar, u/uw too formal. And I feel the balance between the two is different in Flanders vs the Netherlands.

For something like Facebook, it's OK to use je/jouw. But for something like a government website, or perhaps things like banks or insurance companies, je/jouw is not appropriate and u/uw should be used.

I just checked some samples: Facebook uses je/jouw, LinkedIn uses u/uw, government website MyMinfin uses u/uw. That all seems appropriate, so the choice is perhaps not as delicate as I first thought.