But it makes me wonder. What Maciej is effectively doing here is asking for donations. Which is great. But the fact that many Pinboard users would willingly upgrade to a "paid" plan as a token of their support indicates to me that while at the 10,000 foot level signing up for Pinboard is just a market exchange like any other, at a closer level Pinboard users are members and not just customers. This despite the fact that Pinboard eschews the social features that are common among other bookmarking platforms!
I bring this up because this kind of thing arises in open source software development as well. For instance, when the developer of htop disappeared for a while, and the community forked it. But we (Internet culture) have not developed the same approaches to handling administration of services that are useful to a group of people. This surprises me. I think there's room for some movement in this direction, where a group of people can maintain a service that is useful to them and made available to the whole group. Perhaps various chat servers / Mastodon approximate this, but even in this case they're often run by individuals and susceptible to the same kinds of outages.