are an interesting way to bring technology, libraries, modern communications and the like to areas with insufficient infrastructures to support home or even business connections, like in Africa. Lots of people are working on them in that context. It seems that people find it an interesting idea in the US too: Cyber Centers Burn Up Atlanta [in Wired News].
The digital divide does exist, it’s just not as simple a matter as most nay-sayers propose. It’s a cultural and political issue, mixed intricately with questions of pedagogical theory, infrastructure development (and hence market issues in the development of major capital projects), among other things.