A Search Engine of Your Own
http://www.searchenginewatch.com/searchday/01/sd0612-hostedsearch.html

Sherman, Chris
Search Engine Watch
2001

Abstract:

If you think that adding search to your site means rolling up your sleeves and hacking together a crawler, indexer and database system, think again. A number of companies offer 'plug and play' services that provide a powerful search engine for your web site -- and best of all, some are free.