I wouldn't be so quick to label a $600 laptop as disposable, but it's definitely closing the gap with desktops. This triggered something I have been thinking alot about, which is what is the right price point to bring technology to the vast majority of the globe that can't afford anything close to what we offer today. What needs to happen to get laptop prices to the same levels that cell phones are at? What needs to be stripped out of a current gen laptop to reduce the price by an order of magnitude? I'd speculate that hard drives, displays, and processors are the 3 big ticket components in any laptop.
Link: Philip Greenspun's Weblog:.
The disposable laptop computer is finally here: IBM (Lenovo) Thinkpads are $600 with 3/4 GB of RAM, wireless networking, and a 14" display.