I used Pinboard a couple of years ago but stopped using it in favor of Pocket (I can't seem to recollect the exact reason why). Pocket is great for things that I want to save for later. I have cached copies of webpages in my Pocket that are no longer online, so that is pretty neat.
Lately I've noticed that Pocket has become like a cold storage for me. I rarely ever go back to reading the bookmarks from it. I recently found a bookmarklet [1] on PH that works like Pocket but sends the bookmarks to your email instead of sending it another app. It has been working pretty well for me so far. I've been using it to send myself an email for stuff that I want to read in the near future (within the next couple of days or so) and use Pocket for saving links that I might need at some later date.
But discoverability is still an issue, I am yet to find a decent solution that can help me find new things based on my interests.