There's a missing element in all this jabber about the potential of e-books and in the mere concept of "blogging" (web-logging.)
It's the link.
Hypertext. Linkability. Connectability independent of location.
Even the idea of a "weblog" is dissonant. "Web." "Log." It's the constraint of immense potential within a narrow format.
Electronic text has capabilities not approached in its role as proxy for old-fashioned print.
Those capabilities emerge in the complexity made possible by the simplest definitive capability the link.
It's as if electronic text is yet stuck in linearity. Even those who write exclusively for online purposes usually only link referentially in a straight line.