just to comment to original post....
I have an Powerbook 12 at 1.5Ghz with 1.25GB RAM and 320GB HD that covers my needs for portability.
but its not faster than an average netbook with real Hard Disk. At most tasks my PB is about the same speed or just a bit faster than a single core atom, but when it comes to flash videos, oh well....
the difference in favor of netbooks are magnitudes!!!
I can't explain why, maybe flash implementation on PPCs are sh!t, maybe the bus of the G4 is strangling, but I can view without skipping only 360p youtube videos, 480p is BARELY watchable and 720p is worst than a slideshow...
as it comes to the format, my PB 12 is about 25% larger than a netbook, about 2x heavier, BUT 4:3 format with 768 pixels vertical resolution is the smallest but still comfort format ever existed. it just fits a full size keyboard!!! the golden line between usability and small factor.
I really can't understand why the display vendors abandoned this format... we could have 1280x1024 and have the same viewing factor as the 1024x600 at 10", and I'm sure laptop vendors with new electronic technology will had the the weight being only 25% more than a netbook.
