I don't see what the appeal is. Basically you get a neutered web experience without Flash, which may be OK for a smart phone, but for a home device doesn't cut it, IMO. What, you are sitting on the couch browsing the web, and you see a site that uses Flash, you can't see it. Then you gotta email yourself the link and open it up on your other machine. After doing that a few times, iPad will go on the shelf, and I'd just use a PC instead from the beginning.
Going to wait for Notion Ink Adam, which may replace my computer entirely, if the price is right.
I mainly use computer for browsing web, so Flash is a must.
Second use is for VNCing into work, so HDMI output to screen + usb keyboard is nice.
Can output 1080p video, so can double as HTPC from a USB HD or for streaming Hulu to screen.
Swivel camera, covers video chatting with family.
E-ink mode makes it a good e-reader plus great battery life.
Better graphics for gaming.
Can use it for GPS.
Basically thing will cover all my computing needs in one device, unlike iPad which would just be a toy to put on coffee table.