I've been a very happy user of Pinboard for the last few years (ever since Delicious got super slow). I even subscribe to the archive feature, although I have no illusion that I will get around to reading all my 20k bookmarks again...

It seems Pocket(which recently started using their extension to politely spam Chrome start page with article suggestions) and Instapaper are in some sort of war of attrition while pinboard is happily chugging along.