Technically a nice idea, but philosophically a terrible one. Because this is how consumerism in a literal sense comes in to the Internet world: the device encourages you to consume rather than contribute - something really against the spirit and the essense of Internet.
I don't think so. I feel the tablet would be used in places where you couldn't contribute (very much) anyway: in the train, in bed before going to sleep, etc. I like the idea of being able to add a keyboard though. If the price is good, I don't see any reason not to buy one.
I honestly am brimming with excitement about getting my hands on one of these.
If they're decent, I've got plans to buy at least 2 more, one going to my mother and grandmother to get them connected to the web with a cheap & simple device.
