any digital documents reside on the web and other networks, but few of them have sufficient metadata to accurately
identify the content. Adding metadata to a document has typically been the burden of the document author, and
few authors take the time to create detailed metadata for their documents, relying instead on editing software to
create metadata such as author's name and modified history. However, few document editors can create metadata
describing the document's
content.
The method for creating metadata may be changing with the public release of OpenCalais. OpenCalais is a public web service that integrates with applications, such as authoring tools, to create metadata about unstructured English document content (with other languages to follow later). Even documents that are created without metadata can benefit from the OpenCalais web service.
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