That blogs have now become a fixture of media and culture might, you’d think, give critics pause before indulging in another round of new media ridicule. But it ain’t so.

Twitter, the micro-messaging service where users broadcast short thoughts to one another, has been widely labeled the newest form of digital narcissism. And if it’s not self-obsession tweeters are accused of, it’s self-promotion, solipsism or flat out frivolousness.

But naysayers will soon eat their tweets. There’s already a vibrant community of Twitter users who are using the system to share and filter the hyper-glut of online information with ingenious efficiency. Forget what you had for breakfast or how much you hate Mondays. That’s just lifecasting.

Mindcasting is where it’s at.

The distinction is courtesy of Jay Rosen (@jayrosen_nyu), a journalism professor and new media analyst at New York University. For him, Twitter is a new way to conduct a real-time, multi-way dialogue with thousands of his colleagues and fellow netizens.

“Mindcasting came about when I was trying to achieve a very high signal-to noise-ratio,” he explained. This meant using his Twitter account to send out tweets pointing to the best media news and analysis he could find, 15 or 20 times a day. “I could work on the concept of a Twitter feed as an editorial product of my own.”

And one more important quote:
““I’ve been following the blogosphere for a long time,” said Henry Jenkins (@henryjenkins), the head of MIT’s Comparative Media Studies center. As a human-to-human communications medium, he said, “I’ve never seen the scale and volume of the flow of information that Twitter is facilitating.””

This is key stuff: Mindcasting, signal-to-noise, etc. They’re not even explicitly mentioning retweeting in this article yet (it’s meant for the mainstream likely not yet on Twitter or just discovering it) as an explicit crowd-sourced filtering and social proof mechanism.

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