Z-Filters is a technique for listening to what millions of people are talking about.

If a hundred million people were to talk about a hundred million different things, making sense of it would be a hopeless task, but that’s not the way society operates. The number of things people are talking about at any given moment is much, much smaller— thousands, not millions—and by limiting results to subjects that are newly emerging or newly active, a comprehensive view of “what’s new” can be seen at approximately the data-flow of the Times Square news ticker.

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