I've been using Instapaper a lot for text to read later, and I need to complete it with something to keep track of my discoveries. Pinboard looks great indeed, but how is the Read later feature? Worth leaving Instapaper?
I also started using pinboard, and the 'killer feature' for me is saving and tagging all of the links I've posted to twitter. I actually started rolling my own before I discovered that they already do it.
I use two of them and they haven't given me any trouble. Pinboard[1] adds a menu option, which I have positioned next to the address bar. Pinboard Right[2] adds a 'Post Page to Pinboard' link to my right-click menu.
The official extension is quite basic. Here's a screenshot that shows literally every feature: http://i.imgur.com/sMVY5.png
"Save to Pinboard" and "Read later" work exactly like the bookmarklets, and the four items below the divider are just convenient links to different parts of the Pinboard website. "Save tab set" is fairly useful for moving sessions across machines.
