W3 Search Engines also provides pointers to several Web-based search engines and accompanies the entries with a space to enter you search. It makes the site more convenient as a point of departure. This site is a bit slow sometimes. The Categorical Catapult by Curt Robbins provides pointers to meta-indexes and to databases. His brief annotations indicate where the site is located.
Mailing lists are another area in which it can be difficult to locate information.
Here are some pointers to places that do a varying job of indexing or locating these e-mail groups. Finally, see Roy Tennant's Searching the Internet page for an annotated list of a few search engines and classified databases. The above, of course, are my selections and the remarks or assessments are my personal opinions and do not necessarily reflect those of College Computing or Linfield College .