MOSS Search: Searching concepts

Folks, you should check out Concept Search.  Taxonomy, clustering and much more...This sounds pretty exciting.  Here is an excerpt:

Search, Clustering and Taxonomy features
Concept searching and automatic document classification are now available as fully integrated
services within the SharePoint portal platform. This allows SharePoint users to locate
information within SharePoint using concepts rather than simply searching with keywords. For
navigation the information can be organized in a taxonomy allowing users to browse the
collection by topic and then drill down for more detailed information as required
The ability to navigate a document set with a taxonomy or to provide a user with suggested
locations for storing a completed document are key requirements to ensure your document
repository is not just a document silo where nothing can be located.