A laptop or notebook is a portable personal computer with a clamshell form factor, suitable for mobile use. Although originally there was a distinction between laptops and notebooks, the former being bigger and heavier than the latter, there is often no longer any difference. Laptops are commonly used in a variety of settings, such as at work, in education, and for personal multimedia. A laptop combines the components, inputs, outputs and capabilities of a desktop computer, including the display screen, speakers, a keyboard, and pointing devices (such as a touchpad or trackpad) into a single unit. The device can be powered either from a rechargeable battery or by mains electricity from an AC adapter.
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the ability to rotate the screen to show your opposite something is awesome, and it's still a real computer, not "just a tablet" like the iPad and co.
you can get them cheap @ http://outlet.lenovo.com
if you really want to go the tablet route I'd go with the samsung 10.1" galaxy tab or the iPad 2 (I'd prefer the samsung though, because a) it looks the same as the iPad so people probably won't notice the difference and b) it's simply the better tablet, and supports flash and so on .. with the iPad some stuff doesn't work as well in my experience.
anyway, just my 2 cents