mfagan - 1:10 am on Aug 27, 2003 (gmt 0)
on ResourceShelf [resourceshelf.com]:
* It's an experimental feature
* It augments search results for hard-to-answer queries, by searching a supplemental collection of web pages -- in addition to its main index of 3.3 billion web pages. Results from this index are marked "Supplemental" because they originate from a separate, experimental index that is only used to answer the most obscure and infrequent queries.
* I've [Gary Price] asked a few follow-up questions including: how do they determine what goes in this index and what is an obscure query? Stay tuned.