Welcome to the home of Semantic Search - bringing the Semantic Web to Drupal.
The Semantic Web (Web 3.0) is a huge effort which will take many years to complete. Some obstacles are technical, some political, and others are economic. This module is to reduce the barrier to entry for small organizations into using RDF as a complimentary content repository to Drupals native RDBMS.
Here you can find information about the module, misc related technical notes in the blog and forums, and downloads of specific, related functionality.
I'm really looking forward to talking tomorrow at Drupalcon. I've got a lot of information to share, looking for feedback, and a new direction clear for Semantic Search. I'm confident the FOSS community will help continue the effort of bringing Drupal content into the next generation of the web, and since I've just moved to Spain, meeting my new neighbors will be great!
I've proposed to present the module at DrupalCon 2007 in Barcelona. I've got quite a bit of work to do before the official "dev" release (beta) - but solving the speed issues will help tremendously.