I'm a Pure Math major at university. I use my UMPC for several reasons in school. One of the big ones is weight, I don't have to carry around a heavier laptop. And with weight I get all my text books scanned (for disability reasons) so I further reduce my weight. I love reading books on the ultra mobile. I enjoy surfing, emailing and other daily activities on the device.

I am actually going to order the keyboard so that I can do math editing on it this semester (something I do a lot) and that will not stress the CPU of the ultra mobile too much.

All in all I find it an acceptable replacement of daily activities, but when I get home I use the laptop for the things that need more powere, like doing mathematical calculations and programming. I see that some people do do programming on the ultra mobile, I think I've avoided it more due to space issues on the harddrive.