OpenCalais

I remember hearing talk about the need for a new database field to be added to Drupal core taxonomy.module's term_data table to stash the GUID/UUID/URI associated with a term. This was particularly relevant for sharing/importing/exporting taxonomies and using standard vocabularies. I suspect it also has relevance to RDF, but my comprehension is still a bit hazy on it.

OpenCalais calais.module adds a column 'guid' to the term_data table. I can't imagine that there would be any collision risks if other modules insert in this field as well for their own vocabularies.

I ran across a new memetracker built on Drupal/OpenCalais and custom code. It looks very cool. Check it out at Polymeme.com

They're tracking some 25,000 blogs and apparently running them all through OpenCalias as part of the process for finding "memes" along with some human editorial touch.

The creator of polymeme writes more about the site on his blog:
http://evgenymorozov.com/blog/?p=397

ThompsonReuters and Phase2 have released the OpenCalais Drupal module for both D5 and D6. Note that this is not the same as the previously announced but unreleased Calais module.

It submits content to OpenCalais and gets back a set metadata that it maps to Drupal vocabularies and terms. The results can be automatically inserted into the database or merely suggested to node authors.

Reuters has opened up a web application to streamline the process of generating metadata around content. From their web site at http://opencalais.mashery.com/Overview

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The Calais Web Service