The One Laptop Per Child project set out to create a system that could be used by children, even those who have never seen a computer before or may not even know how to read. With the system coming to North America through the recently-ended Give 1 Get 1 program, however, it also serves as a benchmark for low-cost computing and for the progress of Linux as a mainstream operating system. In our XO notebook review, we find out not just whether the $400 spent is worthwhile for the donation but also whether it can stand in as an ultra-budget alternative to a Mac or Windows portable.