Contributor-Indexing Process
"Submit something along with key terms and we will include it in our
index"
Creators of documents submit URL and terms for indexing: George Patton
-- Patton, World War II, Third Army, tanks
Harvest Information Discovery and Access System, University of
Colorado -- searches other indexes
CUI W3 catalog (University of Geneva, Switzerland) searches through
directories (summaries) of other Web documents