I like the conceit here. Notebooks, to me, have always been the most appealing receptacle for thoughts and creativity, but they have the unfortunate distinction of being made of paper. Since I started using computers, I've always kept folders with clippings from the web--saved images, bits of text, PDFs of whole webpages even, which for the most part stay right there in their folders. A tablet conceit like this lets those clippings become part of your daily work, which is a pretty exciting thought. In the end, it all comes down to whether the input method of multitouch + stylus can smoothly replicate pen on paper. Many have tried and failed, but I'm glad Microsoft appears to be taking another shot.