10 Reasons Why the Internet Is No Substitute for a Library, by Mark Y. Herring:

http://www.ala.org/ala/alonline/selectedarticles/10reasonswhy.htm

Search Engines:

Google: http://www.google.com

The Basics of Google Search: http://www.google.com/help/basics.html

Google Images: Go to Google and click on Images.
Google Scholar: http://scholar.google.com
Google Directory: http://directory.google.com/

Other Popular Search Engines:

AltaVista: http://www.altavista.com
HotBot: http://hotbot.lycos.com
Lycos: http://www.lycos.com
WebCrawler: http://www.webcrawler.com
Yahoo: http://www.yahoo.com
Foreign Search Engines: http://www.allsearchengines.com/foreign.html
Specialized Search Engines and Directories: http://webquest.sdsu.edu/searching/specialized.html

KartOO (a visual, multilingual search engine): http://www.kartoo.com/

How to Search:

Seven Steps toward Better Searching: http://webquest.sdsu.edu/searching/sevensteps2001.html

InfoPeople Search Tools Chart: http://www.infopeople.org/search/chart.html

Pitt Libraries:

Pitt Libraries Home Page: http://www.pitt.edu/libraries.html
PITTCAT: http://pittcat.pitt.edu/
Pitt Instant Virtual Extranet: https://sslvpn.pitt.edu
Pitt Digital Library: http://www.library.pitt.edu/
Visuals for Foreign Language Instruction: http://www.library.pitt.edu/articles/database_info/visualslang.html

Listservs:

SLART-L (SLA Research and Teaching): http://www.lsoft.com/scripts/wl.exe?SL1=SLART-L&H=LISTSERV.CUNY.EDU
LTEST-L (discussion list of the International Language Testing Association):
http://www.le.ac.uk/education/testing/ltr.html
LINGUIST-L: http://linguistlist.org/

Other useful sites:

US Department of Education: http://www.ed.gov
CHILDES Language Data Exchange System: http://childes.psy.cmu.edu/
bach.arts.kuleuven.ac.be (database on classroom learner L2 French data from Belgium):
http://bach.arts.kuleuven.ac.be/
International Picture-Naming Project: http://crl.ucsd.edu/~aszekely/ipnp/