Until the last year or so, I really felt like Pinboard was a model for how an online service should be run. Maciej's strong advocacy for privacy and ethical business models are the reason I was comfortable paying for another five years of archiving upfront - I made my account in 2011 and until now had never seen a reason to jump ship.
Nowadays, though, self-hosting is much more workable than it used to be and I feel more confident that I can manage my own data safely... or maybe I've just realized I'm not confident that anybody else can.