The author makes a good point. "Web pages make poor hosts for topical metadata. The cost and effort of adding topical metadata to an information structure is only recouped if that information structure persists in time with a predictable structure, identity and contents." But he then draws a terrible inference. "The legacy technical and social environments supporting IR in document databases are sketched above. It is possible to re-create this environment on the Web behind passwords in venues such as intranets, enterprise computing, and digital libraries." In other words, the way to make keyword search work on the web is to close the web. Eek!
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