Many school library media positions are listed here. An advantage of this site is that all positions are provided in table format, making it easy to read. Very little information is provided about each position. This site also links to other Internet-accessible library job sites. Librarian positions posted on all Usenet groups received by AltaVista, Digital Equipment Corp's search engine.
Some false drops are, naturally, inevitable.
Position postings on Web4Lib, a discussion group for use of the World Wide Web in libraries.