Meta sites are sites that contain many links to all sorts of subjects.

Digital Librarian

BUBL Link

Infomine

Internet Public Library

Librarian's Index to the Internet

My Virtual Reference Desk

Argus Clearinghouse

Internet Scout Report

Virtual Library

Galaxy.net

Desk Ref - Sources for Quick Answers

Information Please Almanac

Best Information on the Net - By College Major

Community Learning Network

Doreen Hanson's Bookmarks

KidsClick

Library Spot

Online Homework Helpers

Open Directory Project

Michigan Electronic Library

Brown University's Virtual Reference Collection