I switched to PinBoard when the slide about "sunsetting" Delicious was leaked. I've got the archive plan which has worked wonders since a few bookmarked sites have died since then.
I have it tied to my Twitter account. Now anytime I retweet a URL, the URL gets "pinned" to my account and marked "unread".
In addition, I use Instapaper since it's integrated to various iPhone and iPad apps. Pinboard also imports anything from your Instapaper feed, so it becomes the end-all be-all for my bookmarks.