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Harvesting the Ephemeral

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20050617 Friday June 17, 2005
Hacking the Blog: Trackbacks ... in Hacking

gconf has posted an article on how to add trackbacks to your blog. So, what in the world is a trackback? Here's a quote from Movable Type's Beginner's Guide to Trackback:

In a nutshell, TrackBack was designed to provide a method of notification between websites: it is a method of person A saying to person B, "This is something you may be interested in." To do that, person A sends a TrackBack ping to person B.

And why would person B be interested in what person A has to say?
  • Person A has written a post on his own weblog that comments on a post in Person B's weblog. This is a form of remote comments--rather than posting the comment directly on Person B's weblog, Person A posts it on his own weblog, then sends a TrackBack ping to notify Person B.
  • Person A has written a post on a topic that a group of people are interested in. This is a form of content aggregation--by sending a TrackBack ping to a central server, visitors can read all posts about that topic. For example, imagine a site which collects weblog posts about Justin Timberlake. Anyone interested in reading about JT could look at this site to keep updated on what other webloggers were saying about his new album, a photo shoot in a magazine, etc.

Alright, so lets give it a whirl. Following gconf's instructions:

Now if you go look at the comments on gconf's post, you'll see that this entry had been added there and prefixed with [Trackback].

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