I love Instapaper - it’s pretty much how I read everything that’s more than a couple paragraphs long. And I loved Delicious for saving links… with the impending demise of Delicious, like many others I’ve switched over to Pinboard.in as a bookmarkeing service.
Here’s a neat Instapaper-to-Pinboard trick: sign into Instapaper and go to the Account Settings page. About halfway down, you’ll see the Pinboard integration option. Once you authenticate with Pinboard, whenever you “Star” an item in Instapaper, that link will be saved to your Pinboard account.