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If you append a tag prefaced by a #, the hashtags site will cluster them.

This is a cool example of metadata being layered in from outside an app. Well, the metadata is being created inside the app (Twitter) but it’s only metadata, and not noise, because an external app (hashtags) says so….

11 Responses to “Hashtags – making sense of Twitter”

  1. on 24 Dec 2007 at 7:54 pmNate Westheimer

    This is great. I first heard of this through Chris Messina.

  2. on 30 Dec 2007 at 8:59 pmpeter

    Your book is on my wish list and judging from the intro material I’ve read (c/o here and Creative Generalist) is a must read for me. I’m webmaster of Hodges’ model:

    – a global framework for knowledge, with four fairly unique link resources. You may find this recent blog post (and others?) of relevance?

    All the best for 2008 and beyond…

  3. on 02 Jan 2008 at 10:32 amTeketen

    There is a communitary effort to create semantic information in small text messages like twiter, jaiku or SMS. Is opened to discussion and all effort is apreciatted. Some apps are using nanoformats to their message syntax. If you are interested:

  4. on 27 Aug 2008 at 2:12 pmSniki BETA: Hash Tags

    […] by Rod Edwards * Making the most of hashtags by Chris Messina * by Stowe Boyd * Making sense of Twitter by David Weinberger * […]

  5. on 28 Aug 2008 at 12:59 pmDesarae A. Veit


    Thanks for the sniki referance.

    This is a perfect example of when the social media wiki can be helpful. :)

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  7. on 26 Jan 2011 at 3:22 pmLatinos in #Twitterlandia |

    […] it’s about belonging. In an early post about the Twitter hashtag, social tech pioneer David Weinberger marveled over the simplicity with which this small innovation has enabled people to add their own […]

  8. […] Making sense of Twitter by David Weinberger […]

  9. […] Making sense of Twitter by David Weinberger […]

  10. […] Making sense of Twitter by David Weinberger […]

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