Hello, Please tell me the latest and greatest about these "netbooks". Tiny laptops optimized for portability and weight. I travel a fair amount, and feel that a macbook air would be neat, but smaller/lighter (if posible) and cheaper would be nice. I think Asus, sony, and a few others make them. Any preferences? I had an old (2002) sony running XP and with a 10" screen. Still runs, but 256 MB ram, battery non-working and slow, even running opera. Thanks!