Toshiba Libretto W100's screens are centerpiece of the device since there's literally nothing else, and they do the job well. In standard clamshell laptop mode the bottom screen can appear a little dark compared to the top screen, but fortunately, screen brightness can be set independently, so it's possible to make the bottom screen brighter than the top and thus even out the brightness.
Both work on either screen, even simultaneously, and they provide haptic feedback on both screens as well.
I find typing on this keyboard MUCH better than any other touch screen keyboard I've tried, and even with pretty big hands (I wear extra-large men's gloves) I can get 40+ WPM out of it. The virtual track pad, while virtual, is very much like any physical track pad found in netbooks and laptops many are just smooth surfaces these days anyway. The old argument that Windows doesn't work well on small screen devices is largely mitigated by the track pad.
The W100's strengths are geared towards productivity, but it's not just all work, it serves well as a media player imbued with all the power of Windows.
For the avid reader, Windows supports all of the major eBook sources, including Kindle and the Barnes & Noble Nook apps, which both have basic touch support in Windows 7 and will sync up and share content with other reading devices such as standalone Kindles and Nooks. None of the readers I've tried work well in portrait mode as they are not dual screen aware, but they do work well in landscape mode using both screens. Any type of document that breaks naturally like a web page should work fine spanning both screens.
On the Libretto, it's all here: Word, Excel, PowerPoint, Photoshop any application that will run well on an entry level laptop with Intel integrated graphics.
If you find working on a netbook (a very fast netbook) a productive experience, then the W100 should work as well as long as the virtual input devices agree with you. Of course, there are always Bluetooth keyboard and mice.
