I've reached a point where I keep Pinboard open all the time. But I get stymied by all of my Safari tabs and windows, so I decided to create a Fluid browser for Pinboard.
First, create a new Fluid application:
Once the application has been created, it's time to make Pinboard look nice. Head back to Brett's place and grab his Pinboard.css. Open up the UserStyles panel.
Create a new Pinboard style and paste in Brett's CSS.
I modify the settings a bit so links open in new tabs and the URL bar is displayed.
Boom. A Pinboard app that is outside of Safari and responds to ⌘+TAB application switching and app launchers.