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They've used it to keep track of information they find on the web, to share information with our class group, and

because of their proficiency with it that when an idea came to me today 5 minutes before the start of class of a new purpose for which I could have my students use Diigo

We create economic value out of information when we figure out an effective strategy that includes aggregating, filtering and connecting.

So, the real question is, how do we design filters that let us find our way through this particular abundance of information? And, you know, my answer to that question has been: the only group that can catalog everything is everybody. One of the reasons you see this enormous move towards social filters, as with Digg, as with del.icio.us, as with Google Reader, in a way, is simply that the scale of the problem has exceeded what professional catalogers can do. But, you know, you never hear twenty-year-olds talking about information overload because they understand the filters they’re given. You only hear, you know, forty- and fifty-year-olds taking about it, sixty-year-olds talking about because we grew up in the world of card catalogs and TV Guide. And now, all the filters we’re used to are broken and we’d like to blame it on the environment instead of admitting that we’re just, you know, we just don’t understand what’s going on.

The five forms of filtering break into two categories: judgement-based, or mechanical.