@Pinboard when you bought Delicious (thank you!) you wrote that there was no time pressure to import book marks - but their website is no longer active and I don't see on your Help how to import a different way. I'd love to get at that fabulous archive of my reading if possible!
The site should be active—go to https://del.icio.us/export . You may have to click through a security warning becuase it has an old certificate.