Danah Boyd points to a study of Twitter usage by PearAnalytics, that concludes:
40.55% of the tweets they coded are pointless babble; 37.55% are conversational; 8.7% have "pass along value"; 5.85% are self-promotional; 3.75% are spam; and ::gasp:: only 3.6% are news."
These are means of communication, used by humans to communicate, each with their own idiosyncrasies, but all driven by the same impulses that have always driven humans to communicate: the urge to connect, to find, to babble, to sell, to buy, to share, to romance, to complain, etc etc etc...
Twitter, or microblogging in general, will bring profound changes to some of its users (it has for me) in how they find/consume/interact with information and other people. As did the printing press, papyrus, the ballpoint pen, telegraph, telephone, radio, television, email, blogs, youtube, mobile phone, among others.
The interesting question is how these things change our informational and social interactions; but the question of whether or not these "new" tools are "good" or "valuable" are moot: if people use them, they use them because they find them good and valuable for whatever reason.
Humans have been pretty consistent in flaws and virtues over the past few thousand years; amazingly we still seem to be surprised when new tools of communication come along and display, in a new way, those same old flaws and virtues.
Follow Hugh McGuire on Twitter: www.twitter.com/bookoven
It's not at all clear to me that twitter will have the same impact on humanity that the printing press did, and it's not clear to me that the pros of twitter outweigh the cons.
Whether microblogging will have as much impact on information usage in society at large as the printing press did is for history to tell us. I doubt it. But it's certainly had a huge impact on how I consume information - equivalent in scale, I would say, to the internet, email, cell phones.
That's just anecdotal of course, but again, I spend probably as much time finding and transmitting information via microblogging as any other form, besides talking. That's a big change. What it's implications are I'm not sure.