Apologies if I'm missing a joke, but Pocket used to be called "ReadItLater". Instapaper still exists and I imagine they're about to get an influx of Pocket refugees.

Not a great joke. Instapaper was really the first one that was read it later. I thought they just it down, but I just switched to Android and Instapaper is (maybe was) only iPhone.

Del.icio.us was just bookmarks, no reader for the phone.