The Sweet Setup is right, Pushpin is a fantastic iPhone and iPad app for Pinboard, a service for saving and optionally sharing bookmarks. It’s the only Pinboard app I use now, and it just released a major update with a ton of goodies.
Among the extensive list of new additions is a healthy does of keyboard shortcuts. You can now navigate, open, edit, and even create new bookmarks in Pushpin, all from an external Bluetooth keyboard. However, I should note that, if you copy a link from another app and switch to Pushpin, the app is smart and offers to automatically create a new bookmark anyway.