I expect this form factor will be quite popular at some point, especially with eyewear products such as those from MicroOptical
Next month, at CES, Microsoft will be back with another round of the tiny computers. The latest tablets, code-named Vistagami because of their Windows Vista support, also will come in a wider range of looks, including some models with keyboards. Microsoft Chairman Bill Gates is expected to mention some of the new devices in his CES keynote as part of a broader discussion of the new types of computers that will be enabled with Vista, including new all-in-one PCs and other esoteric designs.
Source: Microsoft: Vistagami Rising