The latest, greatest technological device is here and from what I've read and seen, it will eventually change reading books, newspapers, magazines and blogs just like cell phones have changed the way we communicate with telephones.
Granted, amazonkindle is in it's first generation, and carries a $399 price tag, but like all technology, we'll see that price drop and maybe even disappear.
Imagine students not having to carry heavy backpacks full of textbooks, schools not needing to buy those textbooks because they can just download the books on to their students' Kindles, walking through a park on a nice day and watching people reading their Kindles instead of books, newspapers or magazines, or riding the train or bus to work while reading your morning newspaper on your Kindle.
Amazon.com says about Kindle: "We wanted Kindle to be completely mobile and simple to use for everyone, so we made it wireless. No PC and no syncing needed. Using the same 3G network as advanced cell phones, we deliver your content using our own wireless delivery system, Amazon Whispernet. Unlike WiFi, you’ll never need to locate a hotspot. There are no confusing service plans, yearly contracts, or monthly wireless bills — we take care of the hassles so you can just read."
Check out the extended video demonstration by going to the amazonkindle link in the second paragraph and scroll down to the video.
The paradigm keeps shifting as change is happening faster and faster. For example, my 30 gigabyte iPod which is less than a year old has already been replaced by the 80 and 160 gig models!