I'm an Instapaper user, but I'm constantly tempted to switch to Pocket. Its third-party integration is unparalleled, and its equal emphasis on all types of content makes a compelling case.
To my mind, though, its web interface leaves a bit to be desired. Pinpockit fixes that. Pinpockit is an alternative web interface for Pocket that adds a couple of extremely handy features.
The interface is undeniably a Pinterest clone (the app's creators, in fact, call Pinpockit a Pinterest-Pocket mashup), and while it could use a bit of polish, the UI is undeniably clean and modern. Whether it's superior to Pocket's web interface or not is, of course, subjective, but it certainly does the job nicely.
The real magic lies in the options to sort articles- by author, by source, even by length (short, medium, long). Authors, source, and length—both in words and minutes—are easily visible below each article's description, and clicking on any of those items pulls up every item with that attribute. So, if you happened to like an article you just read, you can simply click on the author's name to find out if you've saved any of his or her stuff before.
All the standard options are here, too, in an overlay that appears when you hover an article: the text-only reading view, sharing buttons, a link to the original article, and favorite, archive, and delete actions. There's no need to import anything; just give Pinpockit access to your Pocket account and everything will just work.
I should note that I couldn't get the "read" view to work properly—I just got a blank white space—but that may just be some odd setting in my setup, so let me know in the comments if you experience the same problem and find a workaround.
If you use Pocket, but prefer a Pinterest-style layout, you'll love Pinpockit. Even if you don't care for the UI, the ability to filter articles by source or author could be tremendously useful. Of course, you could always stick to Pocket's own web interface then open up Pinpockit only when you need its features.