I don`t see any revolutionary technologies with the iPad:
1. The name- when I google iPad I get all iPod hits!! Google thinks iPad is iPod.
2. No handwriting input - Apple`s Newton at least tried to read your handwriting over ten years ago.
3. It uses a phone operating system.
4. It uses a processor similar to Nvidia Tegra but can not multitask.
5. It is closed system, at least it can read my USB flash stick.