From The New York Times (1-jan-2010):

Why Twitter will endure

“What could anyone possibly find useful in this cacophony of short-burst communication?

Well, that depends on whom you ask, but more importantly whom you follow. On Twitter, anyone may follow anyone, but there is very little expectation of reciprocity. By carefully curating the people you follow, Twitter becomes an always-on data stream from really bright people in their respective fields, whose tweets are often full of links to incredibly vital, timely information.

Like many newbies on Twitter, I vastly overestimated the importance of broadcasting on Twitter and after a while, I realized that I was not Moses and neither Twitter nor its users were wondering what I thought. Nearly a year in, I’ve come to understand that the real value of the service is listening to a wired collective voice.”

I guess that means that all of us should keep typing one-liners to give twitter critical mass and, eventually, more substance: nobody really cares, but that is the point!