Fravia: searchlores.org and fravia.com, “Advanced Internet searching strategies & advice / Resources for basic, advanced & deep web seekers”; Fravia stopped posting and updating the site in autumn 2008 due to terminal illness. [google]
A technique for finding videos, images, and sound files that are on the Web but aren’t “public.” But when you’re searching, what you’re searching for is being recorded. So another hands-on tutorial shows a set of techniques for keeping those searches secret. [more]
Learn more from Googletutor.com.
Paper, “NOTES ON FREE TEXT INFORMATION RETRIEVAL” by Mark Zimmermann (March 1990)