The success of all these things such as weblogs, websyndication, etc, is directly attributable, I think, to one basic fact: weblogs are basic, rudimentary Content Management Systems. At risk of over-simplifying, I say that human intellect, human intelligence itself, in vasty varying levels of sophistication, is also a Content Management System.
And while over the course of human development we have evolved methods to bridge all our individual Content Management Systems, by using such technologies as speech, writing, printing and their myriad extensions, in keeping with the acceleration afforded to it by "electric communication", it is in the past 10 years that we have built the infrastructure for what we have over the last 3, seen emerge.
It is still early. We have not yet transposed semantics into what we have built recently yet. That will come. Soon.
I gleefully repeat to anyone who will listen, that we are "building out telepathy", echoing McLuhan's "we are extending our central nervous systems"... though we have overshot that already! The nerves are laid out in fiber optic, cable, wireless and POTS world-wide, the basic methods of sending data standardized in protocols layered in the TCP/IP stack (HTTP is a layer in that; the Application layer).
We began relaying messages at first. Now we have begun structuring the messages. This will continue.
All our technology is externalization of ourselves. As such it is fundamentally organic and follows easily predictable paths; if you have the patience and know how to tend a bonsai tree...