[consta]

The blog post states that Pinboard makes around $200k a year but they charge only a one-time fee of $10. Does that mean they get 20k signups each year? Does Pinboard display ads or is there another business model behind it?

[opafritz]

No ads. You have the option of archiving all your bookmarks for $25/year.

https://pinboard.in/tour/#archive

[jcrites]

Pinboard supports archiving and text searching the content of your links for $25 per year.

[rikkus]

I didn't even know this, and I 'bought' it really early on. Thanks for letting me know - I've now signed up for the extra service!