The Kindle came out in December 2007 and it was a while before I started to see them. The iPad clearly seems to be ahead in month-to-month sales comparisons if my own experiences are any indication. Multiple people at Balticon had. My client Peter V. Brett got one the day before we headed down to the convention and was telling multiple people over the weekend that he never wanted to be without and would probably never again take a laptop around with him ever ever again. On the train ride back to NYC yesterday, somebody else in our car already had an iPad. This is a lot of adaptations, awfully quick.
I've been kind of holding out on principle, that if they want to sell me one, I should be able to go into a store and buy one. But the more I see them around, the more I'm not so sure I can hold out. Especially seeing the iPad in the very thin case which Peter purchased for his, squeezing into his shoulder bag, taking up about as much space as some very big square-bound issue of a magazine, my iPad envy was definitely ratcheting up.
I spoke with a B&N bookseller recently who wasn't radiating enthusiasm for the Nook. Told me they've got to spend a lot of time trouble-shooting them instead of selling books. They're on a daily sales quota that adds up to around a couple dozen that should be sold over the course of the week, which quota they have made only rarely.