I don't see the iPad taking off until: I can use my cell phone data plan (ATT as of now) for 3G access. There is a front facing camera and a mic for VOIP/iChat. It multitasks. There is a way to connect to other devices over USB and/or BT (e.g. my DSLR). 64GB is standard at the low price point, or there is a memory expansion slot (SD). The display bridges the gap between the speed and color of an LCD and the readability of e-ink. Please feel free to add to the list.