This looks great. I hope you might prioritize adding a web clipper. For me, the Evernote Web Clipper plugin/extension is the killer app. The rest of Evernote isn't great, but their web clipper is incredibly useful to me.
The only other alternative is DevonThink, which is pricey, but well worth its cost.
> For a small annual fee, Pinboard can download and store a copy of every page you bookmark, for your own private use.
Enabling archiving will also enable full-text search for your bookmarks. How does it work?
Each time you save a bookmark, or put something on your toread list, Pinboard will crawl the URL and store a permanent copy of the page to your account.